I have some G-code written by hand that has evolved over a number of years... however it is not very efficient in it's current orientation. Ideally I would rotate by 90 degrees and then somehow translate so I can make 3 parts from one piece of large stock (there are 3 tool changes in the program). I've been trying to wrap my head around m68 but with no luck.

I zero the program by touching the front left top of the stock (from my POV sitting in a chair in front of the machine).

Can anyone provide some advice or tips?

I am using Camotics to simulate the program. I'm concerned also that Camotics will do one thing and Pathpilot yet another. My machine is currently 5 hours away because I moved and so it's a PITA to go and use it.

Pardon if this sounds stupid, I have no machining background, I happen to make just enough parts with the PCNC to justify owning an older barebones one.