@tom I'm under the impression that AP groups aren't well documented simply because they're still rather theoretical.

Which is to say, in the abstract, people talk about group functionality, but it means different things to different people, folks haven't really settled on how they are supposed to behave, the semantics of them, etc.

In the protocol itself we can see the bits that would enable that functionality, but we haven't really reached a consensus on how it would/should translate from bits to user experience.

And part of the problem is that when groups run up against popular UIs that aren't ready to deal with them, it can really blow up the user experience, so it's hard to develop that incrementally.