I want to create two teams, one has two members and the other has six. They are totally separate teams in different parts of the world working on entirely different products. Can I have a plan for ten users on my main account and use those allow a total of 10 (including me) across multiple teams or do I have to buy a separate plan for the team with six members? I expect to have many teams with one to twenty members, but I would rather have these draw down from a total bought by the main account. Is this possible?