Thanks for responding. I can already display user by the team they belong to. I need to assign an team member order number to sort that list by order for each team they belong to
It is a good idea to have one more datatype for this. You need a new datatype called Team Member that has a field for Team and one for Member (or user). When a member joins a team you create a new Team Member with those fields filled in. Also add some logic so if they want to join a team check if a database entry already exists. If they leave a team either delete the thing, or for history purposes add a date field for when they left.
Then that allows you to set up a repeating group for Team Member and filter by Member and see all their Teams, or filter by Team and see all Members.