By default, the ApplyGroupingColors property is True. Use the ApplyGroupingColors property to prevent showing the events with different colors specified by the groups' EventForeColor and EventBackColor properties. The ApplyGroupingColors property indicates whether the EventForeColor and EventBackColor,  properties of the Group object are being applied to events. The DisplayGroupingButton property shows or hides the grouping button being displayed in the date's header. The ShowGroupingEvents property indicates whether the events are displayed on groups columns. The SingleGroupingView property specifies whether the drop down panel shows radio buttons, instead check boxes, so the user can see all groups or only one group at the time. The GroupID property specifies the identifier of the group where the event belongs. If the control displays groups the GroupID property of the newly created event is automatically updated with the group where the event has been created. The AllowMoveEventToOtherGroup property specifies whether the user can move an event from a group to another at runtime. Use the Add method of the Groups collection to add new groups to the control.