By default, The AllowMoveGroup property is exLeftClick, which means the user can change the Group's position by dragging the Group's Header to a new position. The Position property can be used to programmatically change the Group's position by code. You can enumerate the Group as being displayed using the ItemByPos property of  Groups collection. The Visible property of the Group specifies whether the Group is visible in the schedule view, and un-checked, in the drop down grouping panel. For instance, the AllowMoveGroup on exDisallow indicates that the user can not change the position of the group at runtime. The AllowResizeGroup property specifies whether the user can resize a group at runtime. The LayoutStartChanging(exScheduleMoveGroup) event occurs once the user starts moving a group. The LayoutEndChanging( exScheduleMoveGroup) event occurs the user moves a group.