Here's my scenario.Lets say I'm building a site for a football leaque.The site will allow any footballer or manager to log on and view K2 content.But only managers can create specific content a questionnaire for example.But a manager can only create(or edit) a questionnaire that applies to his football team, not to other football teamsSimilarly a footballer can only answer questions pertaining to his team.I seem to be able to either a) set up different teams or b) set up manager/footballer status but not both. Is this possible?thanksRob

I think I've found the solution I need.

I use Noix ACL to control the manager/footballer access ( via menu items)
extensions.joomla.org/extensions/access-a-security/backend-a-full-access-control/7010

and then K2's ACL to separate the members of the football teams into groups.