Do you know modules to share documents with specific users?
I need to create groups (not important, just a matter of organization) that contains 5 different people (THIS is important).
I have about 10 groups, so 50 people.
I want, as admin, to make a document available to a specific person (and/or group if possible).
Conversely, users (with role) must be able to send me a document (but not necessarily cross-role: just user2admin).