What is a Primary Group and how is it different to a non-primary one for a user?

[Mittineague]

Maybe you missed seeing this?

What does selecting "Primary Group" for a user do?

I’ve been trying to work out exactly what selecting a “Primary Group” for a user does… … thought I would share what I have found: Selecting the Primary Group Selecting a user from /admin/users takes you to the specific users admin page /admin/users/{username}. On that page you will find the groups options: [Screen Shot 2021-06-23 at 14.13.01] You can only select a Primary Group for a user if they have “Custom” groups selected. In the example above Discourse and Test are the only “Custom”…