To create a state element, choose one of the following methods:
Using the diagram toolbar button:
Click the State 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 > State.
Using the element context menu:
In the UML Navigator view, right click on the appropriate diagram that will contain the new state element.
From the context menu, select New > State.