All companies have 5 teams created by default viz. Leadership, Design, Engineering, Marketing and Sales. Admins can add people to their teams with the following steps:
From the right panel, go to People and Teams
In the People’s tab. You can see all the people in your company and their requests for approval.
Click on the Approve Request button
After approving, you should see a modal for approving their verification request and adding them to a team. You can select a team from the dropdown or create a new one
Once, done, you should see the teammate in that specific team in the Teams tab.