Hot Wire Foam Cutter need Help mach3 Setup

Hi, I am just building Hot Wire Foam Cutter.The mechanical part is done. I bought TB 6560 4 axis board. I have been struggling with mach3 setup since two days. I don't know, how could I control two stepper motors on one axis. On the tool there are only two axis Y and Z axis. I mounted 2 motors on Z axis and 2 motors on the Y axis. I did mach3 setup. I followed the setup recommendations. I setup X,Y,Z and A axis. I can move with all for motors. X, Y, Z and A. I don't know the next step. Should I setup X,Y axis one side and Z and A other side? Will this work for Hot Wire Foam Cutter? Should I slave for example A axis to Z axis (this worked) and X axis to Y axis (don't know how, haven't work yet) There is one possibility more X,Y axis one on side and Z and A other side of the tool. Still don't know how to setup it in mach3. Please help. :drowning: May be I think in wrong way.