Hello Steevo,
I see no one has responded to this post yet. So, at this point I would recommend contacting your local Xerox Support Department to speak with a Product Specialist for more assistance. Please call 1-800-821-2797 or 1-800-835-6100.
Is there a default B&W setting that can easily be user adjusted on this printer please? i.e. it defaults to B&W but then the user can use the print dialogue to swap to colour if needed.