A team is how you control different access levels in your repositories. Next, we will see how to create a team and add members to it.
Teams – a great way to grant selective access to your organization projects
Creating a team
As with most cases in GitHub, you can create a team in different ways. The apparent way is to head over to the Teams tab and create a new team by clicking the New team button:

Another way to create a team is to head over to the Settings of an organization repository, and under the Collaborators and teams tab, hit the Create new team button. Notice that only a repository that lives under an organization namespace will have the Teams option. If you edit a personal project, you can only see the Collaborators...