Open the Controller dialog by choosing Controller... from the Edit menu and selecting a controller from the resulting list, or by double-clicking on the controller in the configuration diagram. Select an interface from the controller and press the Connect... button to open the Select Connection Target(s) dialog. This dialog allows you to connect the controller channel interface to a target interface, such as a processor CHPID, switch port or crossbar control unit interface. The dialog leads to others which allow you to create any necessary logical definitions for the physical connection.