Hey i need help with  setting up 4axis hot wire I'm
using g540 gecko 4axis setup.
 I have X and A as a slave i can jog 2 motors with up or down arow
How do i slave Y and B axis so i can jog in sync with lets say arrow key?
i did try sys hotkeys set same key for Y y++38 y-40 B b++38 b-40 no results only one motor moves
Did try formulas  put f(y)=b still nothing.
amateur at best need help!