Territories are an optional way to group and sort buildings together within the backend. Territories are added in your company settings, then linked at the building level. There is Territory filter option on the following pages - Calendar, Scheduler, Building, Inspections, and Deficiencies.
How to setup territories
From the Settings menu, select Territories under the Company section.
Select + New Territory, add the Territory name, then Save.
You will be redirected back to the Territories page. Repeat this process until all Territories have been added.