How to join a group in a community
Web and Desktop
Any community member or admin can discover groups that are also part of that community.
To discover and join other groups in a community, navigate to the community info and scroll down to Other groups.
To join a group that's closed, click the group you want to join > Request to Join. Select the group admin you want to send your request to and click Send.
To join a group that's open, click the group you want to join > Join group.
Note: A group can have up to 1,024 participants.