Hi Clara
You can create a subtype of your BO -> no new functionality
In the WF, assign your main BO to this Subtype.... if you are using events to trigger the WF, maybe in triggering event binding, bind _EVT_OBJECT to this subtype (along with your base object too).
Now you will have two objects - main BO - with default method as CC03 and this subtype, here you set a new default method - to display your other screen.
Bind this one too to your decision step to get the second link.
Regards,
Modak
PS: the above is a theoretical approach