You can have multiple teams across different offices and departments and map them to your employees.
Here's how you can do that:
Office
Head to the people section, select Office tab and click on "Create new"
Add office name, start time and click on "Add office"
Department
Head to the people section, select Department tab and click on "Create new"
Add the department name and click on "Add department"
Note:
To map an employee to a specific office or department, open their profile from the people section, select the department and office from the dropdown menu and hit "Update"
You can also create office specific holiday. Just follow this article to create region specific holidays.