I'm trying to figure out how to allow for users being members of multiple groups. As I see it now, it is only possible to be a member of one group. I want to allow users to choose multiple groups they want to participate in and direct content and notifications for each of the groups they choose. Is this what Group Jive is for? I'm not wanting to have user create groups, but to have groups administratively created and user chosen. I understand that if Group Jive is THE solution, I'll need to wait for it to be developed for CB2. If Group Jive is NOT designed for this purpose, I'd like to know if there are any alternative ways.

For example. There will be a number of Family Groups. Also Task Groups (people who volunteer for certain project tasks.) One person may belong to more than one of these groups. I would prefer that these groups be created and managed on the back end. I would like them to determine access levels. As I see it, a person can only belong to one usergroup. Related to that, I may be missing a concept... Are Joomla User Groups identical to CB User Groups (not talking about GJ here)?

As for GJ, I'm understanding now that it doesn't determine access, but in that case, can creation and membership in community groups be limited to people assigned and not just anyone?

In Joomla's Global Configuration, there are permission settings under Global as well as in the CB component and Users Managers component. Are those all the same? I noticed when I added a new user group, it showed up in all three places, so I figured changes would be the same. However, I made a specific change (allow Access Administrative Interface) under CB, but that didn't show up for the same user in Global or User Manager. Likewise, I changed the setting in CB back to Inherited=Not Allowed and then made it "Allowed" in UM... the change only occurred in UM.

Aside from access control, are what is the practical difference between Usergroups and GJ community groups, given similar limits to creation and membership?