Right-click anywhere on the list to display the C1Expander context menu, which is a context menu that Visual Studio provides for all .NET controls, although the C1Expander context menu has a few extra features.

The context menu commands operate as follows:

• Show Smart Tag
  Clicking this item shows the C1Expander Tasks menu. For more information on how to use the smart tag and available features in the Tasks menu, see C1Expander Smart Tag.
• Add Extender
  Clicking the Add Extender item opens the Extender Wizard, allowing you to add an extender to the C1Expander control.