What is the meaning of the settings under members/Edit Community Membership?
Alphabetical list of group members. • Click of “promote” beside name to make someone into a group administrator. • Click on “demote” to make an administrator into a regular member. • Click on “remove” to remove the member from the group. Note that leaders of the parent group are automatically leaders of sub-communities. Note that members of sub-groups are automatically members of parent groups.