I need to add some functionality to a laser machine, via software. RD Works with a RUIDA card.

I want to add a laser pointer to my laser machine. let me explain with a CNC router example (see attached picture). In this setup, the laser pointer is attached to the edge of the spindle. The software (Mach 3) calculates an offset, so when the router makes the actual cut it coincides exactly with the offseted laser pointer. I want to add this kind of functionality to my laser cutter. I have tried offseting the path on Corel Draw, and basically it works, but I need it to be done on an "elegant" way. Is there a way to program this on RD Works? I know this software is not open source. What can be done about it?