Ceramic Pro doesn’t recommend it. Generally, a wax coating won’t last very long on a ceramic coated car, and it may leave smears or streaks.
The hydrophobic effect of Ceramic Pro means that any liquid which comes into contact with the surface of your car will bead up and roll away, bringing any excess dirt and grime away with it. Essentially, you’ll probably find there’s no need to wax your vehicle, as your paintwork will have a high gloss finish and remain clean for much longer than a car without ceramic coating.