Right tap or right-click the page. In this case, this is the element to which the C1RadialMenu is attached. Observe that the Navigation Button appears.
Tap or click the Navigation Button to open the radial menu. Observe that the C1RadialMenu contains three C1RadialMenuItems.
Your top-level menu should resemble the following image:
Complete the following steps to create a submenu that's attached to one of a C1RadialMenu's items: