A User is a person who has some access to the system. Most Users are people who have access to particular Devices at particular times (TimeBands). Some Users may have access to configure the system – such as adding other Users, monitoring the system, or configuring the hardware (db Devices / db Bus Devices). Each User can be assigned to one User Group. This User Group can be NONE (no access anywhere at any time), “<default> 24/7 All Doors”, or a specific User Group. The User’s access is determined by his or her assigned User Group.