Documentation for Create Space Members is Incorrect

I am trying to add a user to a Space to make them a member. The documentations says:

Once a user has been created, a space admin can follow these steps to make that user a member:

1. Go to the space that the user should be granted access to

2. Click the “members” button on the right side of the screen

3. In the “Add Existing User” box, type in the name of the user and click “add to space”

I am logged in as "User 1" the site admin user but can see no way of adding members as per these instructions i.e. there is no members button on the right of the screen.

Screenshot of my screen: https://screencast.com/t/iRY6XPpHZ

Thought this was a critical error but now realise members can be added through the menu on the left of the screen.