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- Goal: Be able to create, join, and leave groups easily
- Subtask: Create a group
- Precondition: Know which users to be included in the group
- Postcondition: Create group with the intended users
- Subtask: Join a group
- Precondition: Know which group to join
- Postcondition: Join the group
- Subtask: Leave a group
- Precondition: Belong to a group but no longer want to stay with the group
- Postcondition: Leave the group
- Subtask: Administrate a group
- Precondition: Be the administrator of a group and have requests from other users
- Postcondition: Accept or deny request for joining the group
