Groups are the way to organize users into collections. This will simplify some of the administration of users. Rather than try to keep track of which user can access what, you only need to assign users to a group, and then decide what that group can access.

Obliquid does not limit the number of groups in the system. A large number of groups could result in increased administration if they are not carefully selected. A user can belong to any number of groups. The default installation defines three groups.