I´m running a community site joomle 2.5 with a number of joomla groups with seperate accesslevel. I´m using K2 for all documents sorted in categories seperated with the joomla access group. The site users can be set to different K2 user groups to create and edit own items in the selected categories (main user group). That part was easy, but I want some users to be able to edit all items in a number of selected categories (user group editor) and still only be able to create and edit own in his main K2 user group.

In other words, how do I create multi user group to be assined to different users in the same way a user can be assined to more than one joomla group?

I need the exact same options for my website. Will post here, if I get my hands on such an extension. Hope you´ll do the same then ..