While the group layout page is open, check to make sure these are included:
- Navigate to Setup.
- Enter "Group" in the Quick Find box.
- In the results, click Group Layout.
- Click Related Lists.
- Add Membership Requests to your layout and click Save.
- In Actions, you need Add Member, Manage Notifications, and Edit Group.
- If you want customers to be able to access your group, make sure the Allow Customers box is checked.
- If you want a group to be used just for broadcasting, make sure the Broadcast Only box is checked.