Is it possible to run //42 SkyPark on a 2nd PC? ORBX says that ORBX Central is needed for installation, so this suggests that the software gets installed on the sim PC.
I don‘t think you can.
Maybe the SkyPark homepage has more details.
Couldn’t find anything about that.
Then I would say you can definitely not use a second pc. If you still want to make sure, they have a discord channel. I do not know if you can access it without purchase.