I'm trying to make the groups in the "Social Network" module in Odoo 8 invite-only. The issue is when I set a group to private, any user can still follow it. Is it possible to make these groups private, or am I misunderstanding how these groups are supposed to work?
edit- I have tried making the group "invisible" by setting the privacy to "selected group only," but users not in the selected group can still join.
edit- I ended up doing a complete reinstall and could not reproduce my issue. I believe I may have had accidentally changed something in technical features. I accepted the answer below because that is in fact the correct way to do this.