diff --git a/modules/grequest/config/install/field.storage.group_content.grequest_status.yml b/modules/grequest/config/install/field.storage.group_content.grequest_status.yml
new file mode 100644
index 0000000..496fd0d
--- /dev/null
+++ b/modules/grequest/config/install/field.storage.group_content.grequest_status.yml
@@ -0,0 +1,21 @@
+langcode: en
+status: true
+dependencies:
+  enforced:
+    module:
+      - group
+      - grequest
+id: group_content.grequest_status
+field_name: grequest_status
+entity_type: group_content
+type: integer
+settings:
+  unsigned: false
+  size: normal
+module: core
+locked: true
+cardinality: 1
+translatable: false
+indexes: {  }
+persist_with_no_fields: true
+custom_storage: false
diff --git a/modules/grequest/config/install/field.storage.group_content.grequest_updated_by.yml b/modules/grequest/config/install/field.storage.group_content.grequest_updated_by.yml
new file mode 100644
index 0000000..23222eb
--- /dev/null
+++ b/modules/grequest/config/install/field.storage.group_content.grequest_updated_by.yml
@@ -0,0 +1,20 @@
+langcode: en
+status: TRUE
+dependencies:
+  enforced:
+    module:
+      - group
+      - grequest
+id: group_content.grequest_updated_by
+field_name: grequest_updated_by
+entity_type: group_content
+type: entity_reference
+settings:
+  target_type: user
+module: core
+locked: true
+cardinality: 1
+translatable: false
+indexes: {  }
+persist_with_no_fields: true
+custom_storage: false
diff --git a/modules/grequest/config/optional/views.view.group_pending_members.yml b/modules/grequest/config/optional/views.view.group_pending_members.yml
new file mode 100644
index 0000000..f0d615a
--- /dev/null
+++ b/modules/grequest/config/optional/views.view.group_pending_members.yml
@@ -0,0 +1,660 @@
+langcode: en
+status: true
+dependencies:
+  module:
+    - user
+  enforced:
+    module:
+      - group
+      - grequest
+id: group_pending_members
+label: 'Group pending members'
+module: views
+description: ''
+tag: ''
+base_table: group_content_field_data
+base_field: id
+display:
+  default:
+    display_plugin: default
+    id: default
+    display_title: Master
+    position: 0
+    display_options:
+      access:
+        type: group_permission
+        options:
+          group_permission: 'administer members'
+      cache:
+        type: tag
+        options: {  }
+      query:
+        type: views_query
+        options:
+          disable_sql_rewrite: false
+          distinct: false
+          replica: false
+          query_comment: ''
+          query_tags: {  }
+      exposed_form:
+        type: basic
+        options:
+          submit_button: Apply
+          reset_button: false
+          reset_button_label: Reset
+          exposed_sorts_label: 'Sort by'
+          expose_sort_order: true
+          sort_asc_label: Asc
+          sort_desc_label: Desc
+      pager:
+        type: mini
+        options:
+          items_per_page: 10
+          offset: 0
+          id: 0
+          total_pages: null
+          expose:
+            items_per_page: false
+            items_per_page_label: 'Items per page'
+            items_per_page_options: '5, 10, 25, 50'
+            items_per_page_options_all: false
+            items_per_page_options_all_label: '- All -'
+            offset: false
+            offset_label: Offset
+          tags:
+            previous: ‹‹
+            next: ››
+      style:
+        type: table
+        options:
+          grouping: {  }
+          row_class: ''
+          default_row_class: true
+          override: true
+          sticky: false
+          caption: ''
+          summary: ''
+          description: ''
+          columns:
+            label: label
+          info:
+            label:
+              sortable: false
+              default_sort_order: asc
+              align: ''
+              separator: ''
+              empty_column: false
+              responsive: ''
+          default: '-1'
+          empty_table: false
+      row:
+        type: fields
+      fields:
+        name:
+          id: name
+          table: users_field_data
+          field: name
+          relationship: gc__user
+          group_type: group
+          admin_label: ''
+          label: Name
+          exclude: false
+          alter:
+            alter_text: false
+            text: ''
+            make_link: false
+            path: ''
+            absolute: false
+            external: false
+            replace_spaces: false
+            path_case: none
+            trim_whitespace: false
+            alt: ''
+            rel: ''
+            link_class: ''
+            prefix: ''
+            suffix: ''
+            target: ''
+            nl2br: false
+            max_length: 0
+            word_boundary: true
+            ellipsis: true
+            more_link: false
+            more_link_text: ''
+            more_link_path: ''
+            strip_tags: false
+            trim: false
+            preserve_tags: ''
+            html: false
+          element_type: ''
+          element_class: ''
+          element_label_type: ''
+          element_label_class: ''
+          element_label_colon: true
+          element_wrapper_type: ''
+          element_wrapper_class: ''
+          element_default_classes: true
+          empty: ''
+          hide_empty: false
+          empty_zero: false
+          hide_alter_empty: true
+          click_sort_column: value
+          type: user_name
+          settings:
+            link_to_entity: true
+          group_column: value
+          group_columns: {  }
+          group_rows: true
+          delta_limit: 0
+          delta_offset: 0
+          delta_reversed: false
+          delta_first_last: false
+          multi_type: separator
+          separator: ', '
+          field_api_classes: false
+          entity_type: user
+          entity_field: name
+          plugin_id: field
+        created:
+          id: created
+          table: group_content_field_data
+          field: created
+          relationship: none
+          group_type: group
+          admin_label: ''
+          label: 'Requested on'
+          exclude: false
+          alter:
+            alter_text: false
+            text: ''
+            make_link: false
+            path: ''
+            absolute: false
+            external: false
+            replace_spaces: false
+            path_case: none
+            trim_whitespace: false
+            alt: ''
+            rel: ''
+            link_class: ''
+            prefix: ''
+            suffix: ''
+            target: ''
+            nl2br: false
+            max_length: 0
+            word_boundary: true
+            ellipsis: true
+            more_link: false
+            more_link_text: ''
+            more_link_path: ''
+            strip_tags: false
+            trim: false
+            preserve_tags: ''
+            html: false
+          element_type: ''
+          element_class: ''
+          element_label_type: ''
+          element_label_class: ''
+          element_label_colon: true
+          element_wrapper_type: ''
+          element_wrapper_class: ''
+          element_default_classes: true
+          empty: ''
+          hide_empty: false
+          empty_zero: false
+          hide_alter_empty: true
+          click_sort_column: value
+          type: timestamp
+          settings:
+            date_format: short
+            custom_date_format: ''
+            timezone: ''
+          group_column: value
+          group_columns: {  }
+          group_rows: true
+          delta_limit: 0
+          delta_offset: 0
+          delta_reversed: false
+          delta_first_last: false
+          multi_type: separator
+          separator: ', '
+          field_api_classes: false
+          entity_type: group_content
+          entity_field: created
+          plugin_id: field
+        gid:
+          id: gid
+          table: group_content_field_data
+          field: gid
+          relationship: none
+          group_type: group
+          admin_label: ''
+          label: 'Parent group'
+          exclude: true
+          alter:
+            alter_text: false
+            text: ''
+            make_link: false
+            path: ''
+            absolute: false
+            external: false
+            replace_spaces: false
+            path_case: none
+            trim_whitespace: false
+            alt: ''
+            rel: ''
+            link_class: ''
+            prefix: ''
+            suffix: ''
+            target: ''
+            nl2br: false
+            max_length: 0
+            word_boundary: true
+            ellipsis: true
+            more_link: false
+            more_link_text: ''
+            more_link_path: ''
+            strip_tags: false
+            trim: false
+            preserve_tags: ''
+            html: false
+          element_type: ''
+          element_class: ''
+          element_label_type: ''
+          element_label_class: ''
+          element_label_colon: false
+          element_wrapper_type: ''
+          element_wrapper_class: ''
+          element_default_classes: true
+          empty: ''
+          hide_empty: false
+          empty_zero: false
+          hide_alter_empty: true
+          click_sort_column: target_id
+          type: entity_reference_entity_id
+          settings: {  }
+          group_column: target_id
+          group_columns: {  }
+          group_rows: true
+          delta_limit: 0
+          delta_offset: 0
+          delta_reversed: false
+          delta_first_last: false
+          multi_type: separator
+          separator: ', '
+          field_api_classes: false
+          entity_type: group_content
+          entity_field: gid
+          plugin_id: field
+        id:
+          id: id
+          table: group_content_field_data
+          field: id
+          relationship: none
+          group_type: group
+          admin_label: ''
+          label: ID
+          exclude: true
+          alter:
+            alter_text: false
+            text: ''
+            make_link: false
+            path: ''
+            absolute: false
+            external: false
+            replace_spaces: false
+            path_case: none
+            trim_whitespace: false
+            alt: ''
+            rel: ''
+            link_class: ''
+            prefix: ''
+            suffix: ''
+            target: ''
+            nl2br: false
+            max_length: 0
+            word_boundary: true
+            ellipsis: true
+            more_link: false
+            more_link_text: ''
+            more_link_path: ''
+            strip_tags: false
+            trim: false
+            preserve_tags: ''
+            html: false
+          element_type: ''
+          element_class: ''
+          element_label_type: ''
+          element_label_class: ''
+          element_label_colon: false
+          element_wrapper_type: ''
+          element_wrapper_class: ''
+          element_default_classes: true
+          empty: ''
+          hide_empty: false
+          empty_zero: false
+          hide_alter_empty: true
+          click_sort_column: value
+          type: number_integer
+          settings:
+            thousand_separator: ''
+            prefix_suffix: false
+          group_column: value
+          group_columns: {  }
+          group_rows: true
+          delta_limit: 0
+          delta_offset: 0
+          delta_reversed: false
+          delta_first_last: false
+          multi_type: separator
+          separator: ', '
+          field_api_classes: false
+          entity_type: group_content
+          entity_field: id
+          plugin_id: field
+        nothing:
+          id: nothing
+          table: views
+          field: nothing
+          relationship: none
+          group_type: group
+          admin_label: ''
+          label: 'Approve membership'
+          exclude: true
+          alter:
+            alter_text: true
+            text: '<a href="/group/{{ raw_arguments.gid }}/content/{{ id }}/approve-membership?destination=/group/{{ raw_arguments.gid }}/members-pending">Approve membership</a>'
+            make_link: false
+            path: '/group/{{ raw_arguments.gid }}/content/{{ id }}/approve-membership'
+            absolute: true
+            external: false
+            replace_spaces: false
+            path_case: none
+            trim_whitespace: false
+            alt: 'Approve membership'
+            rel: ''
+            link_class: ''
+            prefix: ''
+            suffix: ''
+            target: ''
+            nl2br: false
+            max_length: 0
+            word_boundary: true
+            ellipsis: true
+            more_link: false
+            more_link_text: ''
+            more_link_path: ''
+            strip_tags: false
+            trim: false
+            preserve_tags: ''
+            html: false
+          element_type: ''
+          element_class: ''
+          element_label_type: ''
+          element_label_class: ''
+          element_label_colon: false
+          element_wrapper_type: ''
+          element_wrapper_class: ''
+          element_default_classes: true
+          empty: ''
+          hide_empty: false
+          empty_zero: false
+          hide_alter_empty: false
+          plugin_id: custom
+        nothing_1:
+          id: nothing_1
+          table: views
+          field: nothing
+          relationship: none
+          group_type: group
+          admin_label: ''
+          label: 'Reject Membership'
+          exclude: true
+          alter:
+            alter_text: true
+            text: '<a href="/group/{{ raw_arguments.gid }}/content/{{ id }}/reject-membership?destination=/group/{{ raw_arguments.gid }}/members-pending">Reject Membership</a>'
+            make_link: false
+            path: '/group/{{ raw_arguments.gid }}/content/{{ id }}/reject-membership'
+            absolute: true
+            external: false
+            replace_spaces: false
+            path_case: none
+            trim_whitespace: false
+            alt: 'Reject Membership'
+            rel: ''
+            link_class: ''
+            prefix: ''
+            suffix: ''
+            target: ''
+            nl2br: false
+            max_length: 0
+            word_boundary: true
+            ellipsis: true
+            more_link: false
+            more_link_text: ''
+            more_link_path: ''
+            strip_tags: false
+            trim: false
+            preserve_tags: ''
+            html: false
+          element_type: ''
+          element_class: ''
+          element_label_type: ''
+          element_label_class: ''
+          element_label_colon: false
+          element_wrapper_type: ''
+          element_wrapper_class: ''
+          element_default_classes: true
+          empty: ''
+          hide_empty: false
+          empty_zero: false
+          hide_alter_empty: false
+          plugin_id: custom
+        dropbutton:
+          id: dropbutton
+          table: views
+          field: dropbutton
+          relationship: none
+          group_type: group
+          admin_label: ''
+          label: Operations
+          exclude: false
+          alter:
+            alter_text: false
+            text: ''
+            make_link: false
+            path: ''
+            absolute: false
+            external: false
+            replace_spaces: false
+            path_case: none
+            trim_whitespace: false
+            alt: ''
+            rel: ''
+            link_class: ''
+            prefix: ''
+            suffix: ''
+            target: ''
+            nl2br: false
+            max_length: 0
+            word_boundary: true
+            ellipsis: true
+            more_link: false
+            more_link_text: ''
+            more_link_path: ''
+            strip_tags: false
+            trim: false
+            preserve_tags: ''
+            html: false
+          element_type: ''
+          element_class: ''
+          element_label_type: ''
+          element_label_class: ''
+          element_label_colon: true
+          element_wrapper_type: ''
+          element_wrapper_class: ''
+          element_default_classes: true
+          empty: ''
+          hide_empty: false
+          empty_zero: false
+          hide_alter_empty: true
+          fields:
+            nothing: nothing
+            nothing_1: nothing_1
+            name: '0'
+            created: '0'
+            gid: '0'
+            id: '0'
+          destination: true
+          plugin_id: dropbutton
+      filters:
+        grequest_status_value:
+          id: grequest_status_value
+          table: group_content__grequest_status
+          field: grequest_status_value
+          relationship: none
+          group_type: group
+          admin_label: ''
+          operator: '='
+          value:
+            min: ''
+            max: ''
+            value: '0'
+          group: 1
+          exposed: false
+          expose:
+            operator_id: ''
+            label: ''
+            description: ''
+            use_operator: false
+            operator: ''
+            identifier: ''
+            required: false
+            remember: false
+            multiple: false
+            remember_roles:
+              authenticated: authenticated
+            placeholder: ''
+            min_placeholder: ''
+            max_placeholder: ''
+            operator_limit_selection: false
+            operator_list: {  }
+          is_grouped: false
+          group_info:
+            label: ''
+            description: ''
+            identifier: ''
+            optional: true
+            widget: select
+            multiple: false
+            remember: false
+            default_group: All
+            default_group_multiple: {  }
+            group_items: {  }
+          plugin_id: numeric
+      sorts: {  }
+      title: 'Group pending members'
+      header: {  }
+      footer: {  }
+      empty:
+        area_text_custom:
+          id: area_text_custom
+          table: views
+          field: area_text_custom
+          relationship: none
+          group_type: group
+          admin_label: ''
+          empty: true
+          tokenize: false
+          content: 'No membership requests available.'
+          plugin_id: text_custom
+      relationships:
+        gc__user:
+          id: gc__user
+          table: group_content_field_data
+          field: gc__user
+          relationship: none
+          group_type: group
+          admin_label: 'Group content User'
+          required: true
+          group_content_plugins:
+            group_membership_request: group_membership_request
+            group_membership: '0'
+          entity_type: group_content
+          plugin_id: group_content_to_entity
+      arguments:
+        gid:
+          id: gid
+          table: group_content_field_data
+          field: gid
+          relationship: none
+          group_type: group
+          admin_label: ''
+          default_action: 'access denied'
+          exception:
+            value: all
+            title_enable: false
+            title: All
+          title_enable: true
+          title: '{{ arguments.gid|placeholder }} pending members'
+          default_argument_type: fixed
+          default_argument_options:
+            argument: '3'
+          default_argument_skip_url: false
+          summary_options:
+            base_path: ''
+            count: true
+            items_per_page: 25
+            override: false
+          summary:
+            sort_order: asc
+            number_of_records: 0
+            format: default_summary
+          specify_validation: false
+          validate:
+            type: none
+            fail: 'not found'
+          validate_options: {  }
+          break_phrase: false
+          not: false
+          entity_type: group_content
+          entity_field: gid
+          plugin_id: group_id
+      display_extenders: {  }
+    cache_metadata:
+      max-age: -1
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+        - route.group
+        - url
+        - url.query_args
+        - user.group_permissions
+      tags: {  }
+  page_1:
+    display_plugin: page
+    id: page_1
+    display_title: Page
+    position: 1
+    display_options:
+      display_extenders: {  }
+      path: group/%group/members-pending
+      menu:
+        type: tab
+        title: 'Membership requests'
+        description: ''
+        expanded: false
+        parent: ''
+        weight: 21
+        context: '0'
+        menu_name: main
+    cache_metadata:
+      max-age: -1
+      contexts:
+        - 'languages:language_content'
+        - 'languages:language_interface'
+        - route.group
+        - url
+        - url.query_args
+        - user.group_permissions
+      tags: {  }
diff --git a/modules/grequest/grequest.info.yml b/modules/grequest/grequest.info.yml
new file mode 100644
index 0000000..0c8f7ad
--- /dev/null
+++ b/modules/grequest/grequest.info.yml
@@ -0,0 +1,9 @@
+name: 'Group Membership Request'
+type: module
+description: 'Allows users to request access to Groups'
+package: Group
+core: 8.x
+core_version_requirement: ^8 || ^9
+php: 7.1
+dependencies:
+  - group:group
diff --git a/modules/grequest/grequest.module b/modules/grequest/grequest.module
new file mode 100644
index 0000000..f3c544b
--- /dev/null
+++ b/modules/grequest/grequest.module
@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * @file
+ * Contains hooks for grequest module.
+ */
+
+use Drupal\group\Entity\GroupInterface;
+
+/**
+ * Implements hook_entity_type_build().
+ */
+function grequest_entity_type_build(array &$entity_types) {
+  $entity_types['group_content']
+    ->setFormClass('group-approve-membership', 'Drupal\grequest\Entity\Form\GroupMembershipApproveForm')
+    ->setLinkTemplate('group-approve-membership', '/group/{group}/content/{group_content}/approve-membership')
+    ->setFormClass('group-reject-membership', 'Drupal\grequest\Entity\Form\GroupMembershipRejectForm')
+    ->setLinkTemplate('group-reject-membership', '/group/{group}/content/{group_content}/reject-membership')
+    ->setFormClass('group-request-membership', 'Drupal\grequest\Entity\Form\GroupMembershipRequestForm');
+
+  $entity_types['group']->setLinkTemplate('group-request-membership', '/group/{group}/request-membership');
+}
+
+/**
+ * Implements hook_menu_local_actions_alter().
+ */
+function grequest_menu_local_tasks_alter(&$data, $route_name) {
+  $route_matcher = \Drupal::service('current_route_match');
+  $group = $route_matcher->getParameter('group');
+
+  if ($group instanceof GroupInterface && !$group->getGroupType()->hasContentPlugin('group_membership_request')) {
+    unset($data['tabs'][0]['views_view:view.group_pending_members.page_1']);
+  }
+}
diff --git a/modules/grequest/grequest.routing.yml b/modules/grequest/grequest.routing.yml
new file mode 100644
index 0000000..1ed0662
--- /dev/null
+++ b/modules/grequest/grequest.routing.yml
@@ -0,0 +1,40 @@
+entity.group.group_request_membership:
+  path: '/group/{group}/request-membership'
+  defaults:
+    _controller: '\Drupal\grequest\Controller\GroupMembershipRequestController::requestMembership'
+    _title_callback: '\Drupal\grequest\Controller\GroupMembershipRequestController::requestMembershipTitle'
+  requirements:
+    _group_permission: 'request group membership'
+    _group_member: 'FALSE'
+  options:
+    parameters:
+      group:
+        type: 'entity:group'
+
+entity.group_content.group_approve_membership:
+  path: '/group/{group}/content/{group_content}/approve-membership'
+  defaults:
+    _controller: '\Drupal\grequest\Controller\GroupMembershipRequestController::approveMembership'
+    _title_callback: '\Drupal\grequest\Controller\GroupMembershipRequestController::approveMembershipTitle'
+  requirements:
+    _group_permission: 'administer members'
+  options:
+    parameters:
+      group:
+        type: 'entity:group'
+      group_content:
+        type: 'entity:group_content'
+
+entity.group_content.group_reject_membership:
+  path: '/group/{group}/content/{group_content}/reject-membership'
+  defaults:
+    _controller: '\Drupal\grequest\Controller\GroupMembershipRequestController::rejectMembership'
+    _title_callback: '\Drupal\grequest\Controller\GroupMembershipRequestController::rejectMembershipTitle'
+  requirements:
+    _group_permission: 'administer members'
+  options:
+    parameters:
+      group:
+        type: 'entity:group'
+      group_content:
+        type: 'entity:group_content'
diff --git a/modules/grequest/grequest.views.inc b/modules/grequest/grequest.views.inc
new file mode 100644
index 0000000..d0c0a09
--- /dev/null
+++ b/modules/grequest/grequest.views.inc
@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * @file
+ * Views related hooks.
+ */
+
+/**
+ * Implements hook_views_data_alter().
+ */
+function grequest_views_data_alter(array &$data) {
+  $data['groups']['request_membership'] = [
+    'title' => t('Request Membership'),
+    'help' => t('Provides an Request Membership link to the Group.'),
+    'field' => [
+      'id' => 'group_request_membership',
+    ],
+  ];
+}
diff --git a/modules/grequest/src/Controller/GroupMembershipRequestController.php b/modules/grequest/src/Controller/GroupMembershipRequestController.php
new file mode 100644
index 0000000..dece110
--- /dev/null
+++ b/modules/grequest/src/Controller/GroupMembershipRequestController.php
@@ -0,0 +1,110 @@
+<?php
+
+namespace Drupal\grequest\Controller;
+
+use Drupal\Core\Controller\ControllerBase;
+use Drupal\Core\Entity\Entity\EntityFormDisplay;
+use Drupal\grequest\Plugin\GroupContentEnabler\GroupMembershipRequest;
+use Drupal\group\Entity\GroupContent;
+use Drupal\group\Entity\GroupContentInterface;
+use Drupal\group\Entity\GroupInterface;
+use Drupal\node\Entity\Node;
+use Drupal\user\Entity\User;
+
+/**
+ * Provides group membership request route controllers.
+ *
+ * This only controls the routes that are not supported out of the box by the
+ * plugin base \Drupal\group\Plugin\GroupContentEnablerBase.
+ */
+class GroupMembershipRequestController extends ControllerBase {
+
+  /**
+   * Provides the form for request a group membership.
+   *
+   * @param \Drupal\group\Entity\GroupInterface $group
+   *   The group in which a membership request will be submitted.
+   *
+   * @return array
+   *   A group request membership form.
+   */
+  public function requestMembership(GroupInterface $group) {
+    $group_content = GroupContent::create([
+      'type' => $group
+        ->getGroupType()
+        ->getContentPlugin('group_membership_request')
+        ->getContentTypeConfigId(),
+      'gid' => $group->id(),
+      'entity_id' => $this->currentUser()->id(),
+      'grequest_status' => GroupMembershipRequest::REQUEST_PENDING,
+    ]);
+
+    return $this->entityFormBuilder()->getForm($group_content, 'group-request-membership');
+  }
+
+  /**
+   * The _title_callback for the request membership form route.
+   *
+   * @param \Drupal\group\Entity\GroupInterface $group
+   *   The group to request membership of.
+   *
+   * @return string
+   *   The page title.
+   */
+  public function requestMembershipTitle(GroupInterface $group) {
+    return $this->t('Request membership group %label', ['%label' => $group->label()]);
+  }
+
+  /**
+   * Provides the form for approval a group membership.
+   *
+   * @param \Drupal\group\Entity\GroupInterface $group
+   *   The group where we approve membership.
+   *
+   * @return array
+   *   A group approval membership form.
+   */
+  public function approveMembership(GroupInterface $group, GroupContentInterface $group_content) {
+    return $this->entityFormBuilder()->getForm($group_content, 'group-approve-membership');
+  }
+
+  /**
+   * The _title_callback for the approval requested membership form route.
+   *
+   * @param \Drupal\group\Entity\GroupInterface $group
+   *   The group containing the requested membership.
+   *
+   * @return string
+   *   The page title.
+   */
+  public function approveMembershipTitle(GroupInterface $group) {
+    return $this->t('Approve membership request for group %label', ['%label' => $group->label()]);
+  }
+
+  /**
+   * Provides the form for rejection a group membership.
+   *
+   * @param \Drupal\group\Entity\GroupInterface $group
+   *   The group where we reject membership.
+   *
+   * @return array
+   *   A group rejection membership form.
+   */
+  public function rejectMembership(GroupInterface $group, GroupContentInterface $group_content) {
+    return $this->entityFormBuilder()->getForm($group_content, 'group-reject-membership');
+  }
+
+  /**
+   * The _title_callback for the rejection requested membership form route.
+   *
+   * @param \Drupal\group\Entity\GroupInterface $group
+   *   The group containing the requested membership.
+   *
+   * @return string
+   *   The page title.
+   */
+  public function rejectMembershipTitle(GroupInterface $group) {
+    return $this->t('Reject membership request for group %label', ['%label' => $group->label()]);
+  }
+
+}
diff --git a/modules/grequest/src/Entity/Form/GroupMembershipApproveForm.php b/modules/grequest/src/Entity/Form/GroupMembershipApproveForm.php
new file mode 100644
index 0000000..66161ae
--- /dev/null
+++ b/modules/grequest/src/Entity/Form/GroupMembershipApproveForm.php
@@ -0,0 +1,83 @@
+<?php
+
+namespace Drupal\grequest\Entity\Form;
+
+use Drupal\Core\Entity\ContentEntityConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Drupal\grequest\Plugin\GroupContentEnabler\GroupMembershipRequest;
+
+/**
+ * Provides a form for approving a group membership request.
+ */
+class GroupMembershipApproveForm extends ContentEntityConfirmFormBase {
+
+  /**
+   * Returns the plugin responsible for this piece of group content.
+   *
+   * @return \Drupal\group\Plugin\GroupContentEnablerInterface
+   *   The responsible group content enabler plugin.
+   */
+  protected function getContentPlugin() {
+    return $this->getEntity()->getContentPlugin();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    return $this->t('Are you sure you want to Approve this request?');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription() {
+    return '';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return Url::fromUserInput(\Drupal::destination()->get());
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return $this->t('Approve');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $group_content = $this->getEntity();
+
+    $group_content
+      ->set('grequest_status', GroupMembershipRequest::REQUEST_APPROVED)
+      // Who created request will become an 'approver' for Membership request.
+      ->set('grequest_updated_by', $this->currentUser()->id());
+    $result = $group_content->save();
+
+    if ($result) {
+      $this->messenger()->addStatus($this->t('Membership Request approved'));
+
+      // Adding user to a group.
+      $group_content->getGroup()->addMember($group_content->getEntity());
+    }
+    else {
+      $this->messenger()->addError($this->t('Error updating Request'));
+    }
+
+    \Drupal::logger('group_content')->notice('@type: approved %title.', [
+      '@type' => $group_content->bundle(),
+      '%title' => $group_content->label(),
+    ]);
+
+    $form_state->setRedirectUrl($this->getCancelUrl());
+  }
+
+}
diff --git a/modules/grequest/src/Entity/Form/GroupMembershipRejectForm.php b/modules/grequest/src/Entity/Form/GroupMembershipRejectForm.php
new file mode 100644
index 0000000..60eb1b1
--- /dev/null
+++ b/modules/grequest/src/Entity/Form/GroupMembershipRejectForm.php
@@ -0,0 +1,82 @@
+<?php
+
+namespace Drupal\grequest\Entity\Form;
+
+use Drupal\Core\Entity\ContentEntityConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Drupal\grequest\Plugin\GroupContentEnabler\GroupMembershipRequest;
+
+/**
+ * Provides a form for rejecting a group membership request.
+ */
+class GroupMembershipRejectForm extends ContentEntityConfirmFormBase {
+
+  /**
+   * Returns the plugin responsible for this piece of group content.
+   *
+   * @return \Drupal\group\Plugin\GroupContentEnablerInterface
+   *   The responsible group content enabler plugin.
+   */
+  protected function getContentPlugin() {
+    return $this->getEntity()->getContentPlugin();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getQuestion() {
+    return $this->t('Are you sure you want to Reject this request?');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription() {
+    return '';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return Url::fromUserInput(\Drupal::destination()->get());
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConfirmText() {
+    return $this->t('Reject');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $group_content = $this->getEntity();
+
+    $group_content
+      ->set('grequest_status', GroupMembershipRequest::REQUEST_REJECTED)
+      ->set('grequest_updated_by', $this->currentUser()->id());
+    $result = $group_content->save();
+
+    if ($result) {
+      $this->messenger()->addStatus($this->t('Membership Request rejected'));
+
+      // Adding user to a group.
+      $group_content->getGroup()->addMember($group_content->getEntity());
+    }
+    else {
+      $this->messenger()->addError($this->t('Error updating Request'));
+    }
+
+    \Drupal::logger('group_content')->notice('@type: rejected %title.', [
+      '@type' => $group_content->bundle(),
+      '%title' => $group_content->label(),
+    ]);
+
+    $form_state->setRedirectUrl($this->getCancelUrl());
+  }
+
+}
diff --git a/modules/grequest/src/Entity/Form/GroupMembershipRequestForm.php b/modules/grequest/src/Entity/Form/GroupMembershipRequestForm.php
new file mode 100644
index 0000000..66193dd
--- /dev/null
+++ b/modules/grequest/src/Entity/Form/GroupMembershipRequestForm.php
@@ -0,0 +1,107 @@
+<?php
+
+namespace Drupal\grequest\Entity\Form;
+
+use Drupal\Core\Entity\ContentEntityForm;
+use Drupal\Core\Form\ConfirmFormBase;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Url;
+use Drupal\grequest\Plugin\GroupContentEnabler\GroupMembershipRequest;
+use Drupal\group\Entity\GroupContent;
+use Drupal\group\Entity\GroupInterface;
+use Drupal\user\Entity\User;
+
+/**
+ * Provides a form for requesting a group membership.
+ */
+class GroupMembershipRequestForm extends ContentEntityForm {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getCancelUrl() {
+    return Url::fromUserInput(\Drupal::destination()->get());
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function actions(array $form, FormStateInterface $form_state) {
+    $actions = parent::actions($form, $form_state);
+    $actions['submit']['#value'] = $this->t('Request group membership');
+    $actions['cancel'] = [
+      '#type' => 'submit',
+      '#value' => $this->t('Cancel'),
+      '#submit' => ['::cancelSubmit'],
+    ];
+
+    return $actions;
+  }
+
+  /**
+   * Form cancel handler.
+   *
+   * @param array $form
+   *   An associative array containing the structure of the form.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The current state of the form.
+   */
+  public function cancelSubmit(array &$form, FormStateInterface $form_state) {
+    $form_state->setRedirectUrl($this->getCancelUrl());
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state) {
+    $form = parent::buildForm($form, $form_state);
+    // Hide entity_id field, it will be prefilled.
+    $form['entity_id']['#access'] = FALSE;
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validateForm(array &$form, FormStateInterface $form_state) {
+    /** @var \Drupal\group\Entity\GroupContentInterface $group_content */
+    $group_content = parent::validateForm($form, $form_state);
+    $group = $group_content->getGroup();
+    $plugin = $group_content->getContentPlugin();
+    $entity_cardinality = $plugin->getEntityCardinality();
+
+    // Get the current instances of this content entity in the group.
+    $entity_instances = $group->getContentByEntityId($plugin->getPluginId(), $group_content->getEntity()->id());
+    $entity_count = count($entity_instances);
+
+    // If the current group content entity has an ID, exclude that one.
+    if ($group_content_id = $group_content->id()) {
+      foreach ($entity_instances as $instance) {
+        if ($instance->id() == $group_content_id) {
+          $entity_count--;
+          break;
+        }
+      }
+    }
+
+    // Raise a violation if the content has reached the cardinality limit.
+    if ($entity_count >= $entity_cardinality) {
+      $form_state->setErrorByName('', $this->t("You have already submitted a request. It is waiting for Group Administrator's approval"));
+    }
+
+    return $group_content;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function save(array $form, FormStateInterface $form_state) {
+    $return = parent::save($form, $form_state);
+
+    $this->messenger()->addMessage($this->t("Your request is waiting for Group Administrator's approval"));
+
+    $form_state->setRedirectUrl($this->getCancelUrl());
+    return $return;
+  }
+
+}
diff --git a/modules/grequest/src/Plugin/GroupContentEnabler/GroupMembershipRequest.php b/modules/grequest/src/Plugin/GroupContentEnabler/GroupMembershipRequest.php
new file mode 100644
index 0000000..0cf2421
--- /dev/null
+++ b/modules/grequest/src/Plugin/GroupContentEnabler/GroupMembershipRequest.php
@@ -0,0 +1,188 @@
+<?php
+
+namespace Drupal\grequest\Plugin\GroupContentEnabler;
+
+use Drupal\group\Access\GroupAccessResult;
+use Drupal\group\Entity\GroupInterface;
+use Drupal\group\Entity\GroupContentInterface;
+use Drupal\group\Plugin\GroupContentEnablerBase;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\Core\Url;
+use Drupal\Core\Entity\Entity\EntityFormDisplay;
+use Drupal\Core\Entity\Entity\EntityViewDisplay;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Session\AccountInterface;
+
+/**
+ * Provides a content enabler for users.
+ *
+ * @GroupContentEnabler(
+ *   id = "group_membership_request",
+ *   label = @Translation("Group membership request"),
+ *   description = @Translation("Adds users as requesters for the group."),
+ *   entity_type_id = "user",
+ *   entity_access = TRUE,
+ *   pretty_path_key = "request",
+ *   reference_label = @Translation("Username"),
+ *   reference_description = @Translation("The name of the user you want to make a member"),
+ *   handlers = {
+ *     "permission_provider" = "Drupal\grequest\Plugin\GroupMembershipRequestPermissionProvider",
+ *   },
+ *   admin_permission = "administer members"
+ * )
+ */
+class GroupMembershipRequest extends GroupContentEnablerBase {
+
+  /**
+   * Invitation created and waiting for user's response.
+   */
+  const REQUEST_PENDING = 0;
+
+  /**
+   * Invitation approved by user.
+   */
+  const REQUEST_APPROVED = 1;
+
+  /**
+   * Invitation rejected by user.
+   */
+  const REQUEST_REJECTED = 2;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getGroupOperations(GroupInterface $group) {
+    $account = \Drupal::currentUser();
+    $operations = [];
+
+    if (!$group->getMember($account) && $group->hasPermission('request group membership', $account)) {
+      $operations['group-request-membership'] = [
+        'title' => $this->t('Request group membership'),
+        'url' => $group->toUrl('group-request-membership'),
+        'weight' => 99,
+      ];
+    }
+
+    return $operations;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function createAccess(GroupInterface $group, AccountInterface $account) {
+    return GroupAccessResult::allowedIfHasGroupPermission($group, $account, 'administer members');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function viewAccess(GroupContentInterface $group_content, AccountInterface $account) {
+    return GroupAccessResult::allowedIfHasGroupPermission($group_content->getGroup(), $account, 'administer members');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function updateAccess(GroupContentInterface $group_content, AccountInterface $account) {
+    return GroupAccessResult::allowedIfHasGroupPermission($group_content->getGroup(), $account, 'administer members');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function deleteAccess(GroupContentInterface $group_content, AccountInterface $account) {
+    return GroupAccessResult::allowedIfHasGroupPermission($group_content->getGroup(), $account, 'administer members');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getEntityReferenceSettings() {
+    $settings = parent::getEntityReferenceSettings();
+    $settings['handler_settings']['include_anonymous'] = FALSE;
+    return $settings;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function postInstall() {
+    if (!\Drupal::isConfigSyncing()) {
+      $group_content_type_id = $this->getContentTypeConfigId();
+
+      // Add Status field.
+      FieldConfig::create([
+        'field_storage' => FieldStorageConfig::loadByName('group_content', 'grequest_status'),
+        'bundle' => $group_content_type_id,
+        'label' => $this->t('Request status'),
+        'required' => TRUE,
+        'default_value' => self::REQUEST_PENDING,
+      ])->save();
+
+      // Add "Updated by" field, to save reference to
+      // user who approved/denied request.
+      FieldConfig::create([
+        'field_storage' => FieldStorageConfig::loadByName('group_content', 'grequest_updated_by'),
+        'bundle' => $group_content_type_id,
+        'label' => $this->t('Approved/Rejected by'),
+        'settings' => [
+          'handler' => 'default',
+          'target_bundles' => NULL,
+        ],
+      ])->save();
+
+      // Build the 'default' display ID for both the entity form and view mode.
+      $default_display_id = "group_content.$group_content_type_id.default";
+      // Build or retrieve the 'default' view mode.
+      if (!$view_display = EntityViewDisplay::load($default_display_id)) {
+        $view_display = EntityViewDisplay::create([
+          'targetEntityType' => 'group_content',
+          'bundle' => $group_content_type_id,
+          'mode' => 'default',
+          'status' => TRUE,
+        ]);
+      }
+
+      // Assign display settings for the 'default' view mode.
+      $view_display
+        ->setComponent('grequest_status', [
+          'type' => 'number_integer',
+        ])
+        ->setComponent('grequest_updated_by', [
+          'label' => 'above',
+          'type' => 'entity_reference_label',
+          'settings' => [
+            'link' => 1,
+          ],
+        ])
+        ->save();
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultConfiguration() {
+    $config = parent::defaultConfiguration();
+    $config['entity_cardinality'] = 1;
+    return $config;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+    $form = parent::buildConfigurationForm($form, $form_state);
+
+    // Disable the entity cardinality field as the functionality of this module
+    // relies on a cardinality of 1. We don't just hide it, though, to keep a UI
+    // that's consistent with other content enabler plugins.
+    $info = $this->t("This field has been disabled by the plugin to guarantee the functionality that's expected of it.");
+    $form['entity_cardinality']['#disabled'] = TRUE;
+    $form['entity_cardinality']['#description'] .= '<br /><em>' . $info . '</em>';
+
+    return $form;
+  }
+
+}
diff --git a/modules/grequest/src/Plugin/GroupMembershipRequestPermissionProvider.php b/modules/grequest/src/Plugin/GroupMembershipRequestPermissionProvider.php
new file mode 100644
index 0000000..ff10194
--- /dev/null
+++ b/modules/grequest/src/Plugin/GroupMembershipRequestPermissionProvider.php
@@ -0,0 +1,56 @@
+<?php
+
+namespace Drupal\grequest\Plugin;
+
+use Drupal\group\Plugin\GroupContentPermissionProvider;
+
+/**
+ * Provides group permissions for group_membership_request GroupContent entities.
+ */
+class GroupMembershipRequestPermissionProvider extends GroupContentPermissionProvider {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRelationViewPermission($scope = 'any') {
+    // Handled by the admin permission.
+    return FALSE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRelationUpdatePermission($scope = 'any') {
+    // Handled by the admin permission.
+    return FALSE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRelationDeletePermission($scope = 'any') {
+    // Handled by the admin permission.
+    return FALSE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getRelationCreatePermission($scope = 'any') {
+    // Handled by the admin permission.
+    return FALSE;
+  }
+
+  public function buildPermissions() {
+    $permissions = parent::buildPermissions();
+
+    // Add extra permissions specific to membership group content entities.
+    $permissions['request group membership'] = [
+      'title' => 'Request group membership',
+      'allowed for' => ['outsider'],
+    ];
+
+    return $permissions;
+  }
+
+}
diff --git a/modules/grequest/src/Plugin/views/field/RequestMembership.php b/modules/grequest/src/Plugin/views/field/RequestMembership.php
new file mode 100644
index 0000000..c259831
--- /dev/null
+++ b/modules/grequest/src/Plugin/views/field/RequestMembership.php
@@ -0,0 +1,70 @@
+<?php
+
+namespace Drupal\grequest\Plugin\views\field;
+
+use Drupal\views\Plugin\views\display\DisplayPluginBase;
+use Drupal\views\Plugin\views\field\FieldPluginBase;
+use Drupal\views\ResultRow;
+use Drupal\views\ViewExecutable;
+
+/**
+ * Provides request membership link.
+ *
+ * @ingroup views_field_handlers
+ *
+ * @ViewsField("group_request_membership")
+ */
+class RequestMembership extends FieldPluginBase {
+
+  /**
+   * The current display.
+   *
+   * @var string
+   *   The current display of the view.
+   */
+  protected $currentDisplay;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function init(
+    ViewExecutable $view,
+    DisplayPluginBase $display,
+    array &$options = NULL
+  ) {
+    parent::init($view, $display, $options);
+    $this->currentDisplay = $view->current_display;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function usesGroupBy() {
+    return FALSE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function query() {
+    // Do nothing -- to override the parent query.
+  }
+
+  /**
+   * {@inheritdoc}
+   *
+   * @return \Drupal\Component\Render\MarkupInterface|\Drupal\Core\GeneratedUrl|\Drupal\views\Render\ViewsRenderPipelineMarkup|string
+   * @throws \Drupal\Core\Entity\EntityMalformedException
+   */
+  public function render(ResultRow $values) {
+    /** @var \Drupal\Core\Entity\EntityInterface $entity */
+    $group = $values->_entity;
+    $build = NULL;
+    if ($group->getGroupType()->hasContentPlugin('group_membership_request') && empty($group->getMember(\Drupal::currentUser()))) {
+      $build = $group->toLink($this->t('Request Membership'), 'group-request-membership')->toString();
+    }
+
+    return $build;
+  }
+
+}