How to change the GRBL algorithm from PWM to servo controlled for plotter?

How to change the GRBL algorithm from PWM to servo-controlled for plotter? Q1: Can I use the same CNC for both laser engraver and plotter? The algorithm for PWM laser engraver and servo plotter is different. So the answer is no. Q2: How to modify the GRBL algorithm? This rear part of the video will resolve this question. #GRBL #DIY #fansongphotography