If I am interpreting this right, this is a bit misleading. If you set this up correctly through community builder and have a new box on the registration so that people can click it and be assigned to a group automatically in community ACL, they are not, in fact, being assigned to ONE group, but to ALL groups that are listed under the registration... is this correct?
So there is, in fact, no way to assign users to ONE particular group automatically, right?
Because that seems kind of pointless, unless I'm missing something here.