Closed communities are available only to those members whom admins let join. They are suitable if you as an admin want to share some exclusive content and you want to limit the access to that content only to certain members.
1. Click on Admin Panel.
2. Click on Moderations.
3. On the moderation page, you can find membership requests in two tabs. The first tab is "All" which shows all requests that need to be moderated or you can click " Membership request" to only show membership requests.
4. Find the membership request you would like to take action on and click Approve or Decline
Note: Membership subscriptions fees will not be charged until you approve a request.