Think admin panels.
I am using an icon with 2 persons (like ) to indicate the "user management" section of an app I'm developing.
However, client has asked me to enable group creation (as in being able to group users together in arbitrary groups) but I've no idea what icon I should use, since that icon I've just shown would be ideal for it but then what would I use for "users"?
I thought perhaps a composition could work but... well, any suggestions on how to represent users and groups of users at the same time?
P.S.: oh yeah, that icon is from fatcow hosting set.