You can navigate from one workbench to another using Welcome to V5 dialog box,which aapears ,when you start a session or when you click the icon representing the current workbench.

This conatains the icon for the workbenchs belonging to the configuration and/or product you installed.

You can aslo access the bench icons by right-clicking the current workbench icon.

To customize the ist of workbench icons available:

Tools->Customize.....Command.