Add another team
Every team project has its own default team. But what if you want to bring in another group of people to work on the project? It's easy to create another team for your project and add people to that new team. They can have their own backlog of work, their own team home page, and their own schedules.
If you aren't a member of the Project Administrators group, get those permissions.
From the original team's home page, open the administrative console for the team project.
On the administration page, choose New Team.
Provide a unique name for the new team.
You'll also want to make sure that the new team has its own area path (for assigning work), and the permissions it needs to function in the project. In most cases, use the defaults provided. You can always change the default permissions for the team later.
Add team members and team administrators to the new team.
You can also add team members from the team home page. To learn more about adding people to your team, go here.