Flow widgets are added and edited in the wireframe pane similar to wireframe widgets. Flow widgets are different from wireframe widgets in that they have connection points where connectors can be attached.
Click on Flow in the widgets pane to access the flow widgets and add them to a flow diagram (or wireframe).
Flow widgets can also have a Reference Page. If a flow widget is assigned a reference page, the text on the widget will reflect the name of the page and the prototype can be set to automatically generate links to the page from the flow widget.
Dragging and dropping a page from the Sitemap to the wireframe pane will create a flow widget that is assigned the page as the Reference Page. The reference page on a flow widget can be edited or cleared by right-clicking on the widget and selecting Edit Flow Shape -> Edit Reference Page.
The shape of a flow widget can also be changed to other flow widgets shapes by right-clicking on the widget and selecting Edit Flow Shape and selecting a new shape.