https://www.facebook.com/help/220336891328465
Enough evidence yet?
What are the privacy options for groups?
There are three privacy options for groups: Open, Closed and Secret. The table below shows who can join these groups and what people can see about them.
Open | Closed | Secret | |
---|---|---|---|
Who can join? | Anyone can join or be added by a member | Anyone can ask to join or be added | Anyone, but they have to be added |
Who can see the group name and who's in it? | Anyone | Anyone | Only members |
Who can see posts in the group? | Anyone | Only members | Only members |
Who can find the group in search? | Anyone | Anyone | Only members |
Who can see stories about the group on Facebook (like in News Feed and search)? | Anyone | Anyone | Only members |
https://www.facebook.com/help/103763583048280
How do I join a group?
To join a group, click Join Group in the upper-right corner of the group's page. You may have to wait for a group admin to approve your request. In some groups, you can also be added by someone who is already a member.
Some things to keep in mind when you join a group:
- People may see when you join an open or closed group, or that you're a member of that group, such as in news feed or search.
- When someone adds you to an open or closed group, others may see that you've been invited (ex: in news feed or search). Once you visit a group you're invited to, you'll become a member and other people may see you joined.
- Certain groups on Facebook are secret and may not appear in search results. You can see them once a group member adds you.