Great plugin. Really quite useful, thank you.
In reading the Forum posts it appears you can use the shortcodes [groups_join] and [groups_leave] to set it up so that when someone registers they can self select a group to join (or leave).
What I need to be able to do is auto-join someone to a group based on registration information such as geography - derived from the state that they live in - where each state is mapped to a group. The state groups are already defined and there is content designated for them, I just want to make the group assignment happen easily behind the scenes based on the address the user provides.
Is there a recommended approach for adding this kind of group auto-join logic?