To be more specific, I try to figure out this post processors in ArtCam, as the one I use now GCode (mm)*tap does not support toolchange, and does not let me save multiple toolpaths in one file.
There are many post processors availabe but I have no clue which one to use and why. For example I can save the file using Andersen Multi Tool (*ncc) post processor, and I am already simulating in mach 3 the job.

Oh boy. This hobby is not as easy as I assumed it would be. I am either dumb or the learning curve is quite steep.