How do I make an item public or restrict access to members-only?

Anyone who's a member of an item can change its membership model.

To change an item from to public to members-only:

  1. Open the item.

  2. Click More Conversation Options icon, then click Make <Object> Publicly Available or Make <Object> Members-Only.

When making an item members-only, everyone who has already joined the item is kept as a member.