Social groups types

[Black Widow]

Hi,

I have a question about social groups types.
As i see there are 3 types:
1. public
2. moderated
3. private

I understand what types 1 and 3 are.
Can someone explain what type 2 means?

Thanks.

[Nick]

That group memberships have to be approved by the group owner.

[Black Widow]

Thank you.