The details were in my previous answer on your other post about this :
Group owners can
Make all of the Group’s payments and manage all payment details
See every member’s plan, usage, and call history starting from the day they join the Group
Edit every member’s plan and purchase add-ons to their plan
Remove any member from the Group and/or cancel the service for any member
Add friends and family members to the group, up to a total of 8, including the group owner
Group members can
See their own plan, usage, and call history
Edit their own personal details
Things to bear in mind
Each Group can only have one owner and role cannot be transferred to another person.
Group members won’t have access to any other group member’s account, unless they’re the group owner.
Group members won’t have access to any payment related actions, such as buying add-ons or changing plans.
Group members with an existing offer will start receiving the group discount once their offer expires. Group members with an existing offer that doesn’t expire will keep their offer and the group discount won’t be applied.
