This module gives you a page and a block to toggle (switch on and off) any role.
Best practice is to set up a role that only gives you permission to "toggle some roles", but not to toggle the "toggle some roles" role itself.
This is because you do not want to end up toggling off the role that that lets you toggle roles.
Trust me, it's easier than it sounds.
Panels Display Dashboard allows each panel page to behave as a dashboard for users and organic groups.
This means that organic groups can easily customize the content and layout of their group pages, users can configure their default profile page and most important both groups and users can customize new pages that you define on your project.