Resources are used to categorize and group appointments. The AppointmentItem.ResourceIds property specifies the collection of identifiers of all resources associated with an appointment. End-users can select resources in the Resource combo box within the Edit Appointment form as shown in the image below.

Specify the Calendar.ResourcesSource and set the Calendar.ResourceMappings to load resources from a data source. Use the CalendarBase.Resources property to access resources.

To group appointments by resources, set the SchedulerControl.GroupType property to SchedulerGroupType.Resource.