By default, the AllowResizeGroup property is True, which means that the user can resize a group by left clicking the area between two groups, and dragging to a new position. The AllowResizeGroup property on exDisallow, prevents resizing the groups at runtime. The AllowMoveGroup property specifies whether the user can move a group from one position to another. The LayoutStartChanging(exScheduleResizeGroup) event occurs once the user starts resizing a group. The LayoutEndChanging( exScheduleResizeGroup) event occurs the user resizes a group. The GroupHeaderFromPoint property indicates the group from the cursor, in the header part. You can use the Width property to change the width of the Group by code.