A Location is defined by three user-defined inputs: 1) a unique name, 2) a unique name rule ID, and 3) the server where the Site databases reside for that Location. A Location is defined and created when the Site database is initially created. Additional Locations can be created in the Project Management task. Each Location is a Site-level object, thus other Models within the same Site collection can use the Locations when the Models are configured for Workshare.