Choose from any of the following methods to create a use case element.
Using the diagram toolbar button:
Click the Use Case button
on the diagram toolbar.
Click on the diagram to create the element.
Using the diagram context menu:
In Diagram view, right click on the background.
From the context menu, select New > Use Case.
Using the element context menu:
In the UML Navigator view, right click on the use case diagram that will contain the new use case.
From the context menu, select New > Use Case.