Corporate campuses and companies with many disparate locations may find it desirable to share a corporate visitor management system. This provides the benefit of network security integration and centralized administration and reporting. However, each site does not necessarily need to view the pending visitors for other sites. And in some instances it may be preferable for clearance personnel to NOT be able to view visitors to other company sites. Site Filtering allows the system administrator to establish the buildings and properties that security personnel can process and view visitors for. This allows the company to maintain information on a need to know basis while keeping system management simple.