This section is poorly named. The critical aspect of this section is that it is the only centralized place one can determine who has access to a repository. Currently it is completely broken for our team and this is a security management issue.
With the new changes to the UI layout for the "User groups" page that no longer displays the usernames of the members of each individual group, this is now even more of a blocker. Before I used to be able to do a text-search on the page for the user's name i'm interested in, but now I have to click the link to each of my user groups' pages (of which there are many) and do an individual text-search on each of the pages.
Not to mention that there is still no tractable way to determine who has access to which repos.