racewerks

I have checked the forums and could not find an answer to this question. How do I switch the burning mode for a Dual Layer disc from OTP to PTP? I have an image file that had the layer break set at a specific chapter point in the movie. There is no other acceptable point for the layer break thus PTP must be used. I'm sure this is just a button I need to check but I just can't seem to find it. I appreciate any help I can get on this. Thanks,