By default, the C1RadialMenu control and its submenus will remain open even when a user clicks outside of the radial menu. The only way users can close the radial menu is if they click the Navigation Button in the center of the C1RadialMenu control. However, you can change this behavior by enabling the automatic collapsing feature, which will allow users to close a radial menu by clicking outside of the control's boundaries. To turn on automatic collapsing, set the AutoCollapse property to True.