Sellbrite gives you the ability to add multiple warehouses if you store inventory in different physical locations.
Adding a Warehouse Location
To add a new warehouse location, go to Settings > Warehouse Locations, and click Add Location.
You can edit the name and address of the new location. However, you are not actually adding inventory quantities to the warehouse yet. We're only creating the location in this step.
It is not possible to manually add an FBA warehouse location. Those can only be added by enabling FBA in your Service Integrations.