Wow that was easy. I will list the few steps 1 took for this.
1) Edit process settings -> export . I saved a testprofile name
2) open saved file with notpad
3) scroll down untill you see the <auto configure materials>
4) since i will never print with PVA ( it is glue after all) i just changed the name to PET, and adjusted the temps and extrusion multiplier
5) I wanted to add a 5th material, I highlighted a complete section of material and copied, changed name, temps, and multiplier.
6) restarted s3d, and profited