You can add a new from the Teams list. From the side navigation, click your organisation > Organisation Settings > Organisation > Teams.
Click Create.
Enter the team name, and the optional description.
If this team is the default team for all new staff entries, check the ‘Default’ box.
Select any staff you would like to add to the new team from the list.
After selecting a staff you can tick the Primary Team box to make this team their primary one.
Click Create at the bottom.

