You add modules by clicking and dragging them onto the flowchart view. If you have Object > Auto-Connect checked, then the modules will connect automatically.
The attached flash movie shows how to add a Create module connected to a Process module, in turn connected to a Dispose module (the flowchart structure for a single queue).
If you did not have Object > Auto-Connect checked, you'll need to connect the modules yourself using the Connect button to link module's exit and entry points.
The following flash movie demonstrates this:
-- MichaelOSullivan - 18 Aug 2009