How do I prevent or allow members from joining or leaving a group?
From the Admin Panel:
- Select 'Groups' from the 'Management Tools' section
- Click the 'Manage Existing Groups' link
- From the list of groups, click the 'modify' link for the group you wish to change
- Find the 'Joining the Group' section
- Make desired changes
- Click the 'Modify Group' button at the bottom of the page