In eGovernments Foundations we are having multiple number of Teams. we can create independent teams to manage repository permissions and mentions for groups of people.
Only organization owners and maintainers can create team. Owners can also restrict creation permissions for all teams in an organization.
First sign in to your organization github account.
Once you sign in to your account and if you open view organization you can able to see the above page.
Click on Teams. You will see the below image.
Now, click on the New team
Fill the details as shown in the below image:
After creating team, you will able to see the below image.
If you click on members.you can add members to your team by providing their github username or mail.
Now, you have successfully created GitHub team.