If you’re a group admin of a closed or adult group, you can choose to turn on membership approval for your group, but this can only be with the administrators. This means admins will have to approve membership requests before someone can join the group, and this is only after the age is confirmed to make sure all joining are over 18. To turn on membership approval:
- From your News Feed, click Groups in the left menu and select your group.
- Below your cover photo, click More then select Edit Group Settings.
- Next to Membership Approval, select Only admins .
- Click Save at the bottom.