If you need to change a team member from a coach to a player, or from a player to a coach, follow these instructions:
1. Login to your account in the Vault, and click "R&R Player System" on the left side
2. Click "Add/edit players"
3. Click on your team name (in this example, "Test") or "View"
4. In this example, Jake Test is a member (player). Just click "Set as manager" to make him a coach.
5. I clicked "Set as Manager", so now you can see that his role is Manager (coach). I can change him back to a member (player) by clicking "Set as member."