Need advice for SKR V1.4 and PWM

I've been searching but not found anything yet that helps. I have a custom made printer using a SKR V1.4 turbo board, 1 extruder, 5 steppers, hotbed heater, bltouch and pwm fan. I want to use another servo motor using PWM. As far as I can find out it looks like I can use EXP2 pin 6 or 8(3.25 - 3.26) for this. Could someone help me understand how to set up marlin to use this pin and how to set the pulse width with the G-code?
Thanks for any help on this.

you just need to add SERVO1_PIN to the pin you want, then you can control it with M280

I'll look at it and try it today and see what it does.