Show packages in UML diagram

Hi everyone. The video from http://www.jetbrains.com/idea/training/demos/uml-class-diagrams.html shows that packages for objects in the diagram can be revealed using the spacebar.  On my system (OS X, IDEA 12), this launches the "Enter Class Name to Add" dialog.  Does anyone know the appropriate command or shortcut to do this in 12?



There are a few other changes from the video. most of which I figured out already.  Obviously, certain commands you would expect to be different due to the Command button on OS X, but some appear to be different due to version changes.  It would be nice if this flash video were updated.