How does eXo handle group administration?
Organization Admin portlet shows a list of the users, groups and memberships. Users with admin roles can create groups and assign memberships to other user. The Admin can also go to another users site context and have the capabilities of that user. Using the group site customizer portlet, the group admin (any user can be a group admin if he has group-admin membership of that group) can create a page for the group. The page will be inserted into the personal pages of the other group members (note the pages are only inserted if the other members subscribe to group-pages membership).