[Jack Marck] “So…how do I proof the PAL project in the US? “
You buy a PAL DVD player and a PAL TV, they make them that use our AC. If is doesn’t there would be no problem with using a convertor to get the correct voltage.
Compressor is not the best Standards convertor, if you just want to do it software without the expense of a hardware convertor (this would be the best) at least get Natress FIlters
https://www.nattress.com/Products/standardsconversion/standardsconversion.htm
In DVDSP all regions are selected just leave it as that, normally there is no need to restrict the regions. Do you care if the NTSC version is played in Paris, if not I would leave them as default. Region codes have nothing to do with PAL/NTSC.
You have to author 2 separate projects, you cannot do mix standards within a title, you cannot import PAL assets into a NTSC project.
If there is something still not clear answer again.