We do not offer private groups at this time. Content posted in Community Groups is public, and can be viewed by anyone.
The group's Founder can choose whether or not the group is listed in the directory of Community Groups.
To remove your community group from the directory of groups:
As the group's Founder, navigate to your group.
Click on the orange "Edit Group" button.
Choose "Unlisted" from the "Listed" section.
Click the orange "Save" button.