What are groups?
Can I belong to different groups at the same time?
How do I create a group?
How do I rename a group?
How do I invite a new member to my group?
How do I stop an incorrect invitation?
How do I join a group?
How do I leave a group?
Can I merge two groups?
What settings are available for groups?
How many members can a group consist of?
Can I join a group, in which I have been a member ealier?
How can I delete a member?