The schedule that controls the activity may not be the same schedule that controls the location, people, and equipment. For example, patient visits to a clinic are typically controlled through scheduling. Patients receive an appointment at the clinic, and at the appointed time are seen by a member of the clinic staff. Resources are tangible things that must be reserved prior to their use. Examples might include MRI equipment, portable X-ray machines, or rooms.
People are also tangible resources that are often scheduled.
Typically these people controlled by schedules have special roles, perform special activities, and are in high demand. The unique identification code for a service or resource describes a specific instance of that service or resource. For tangible resources, this may be a serial number, a location, an employee number, or another unique designation. For services, the identification of a slot on the schedule is usually sufficient for unique identification. A code describing the type of class of service or resource This code describes a type or class of service, or resource groups like services or resources together.