Need help setting up XYYZA for stepper motors

My Dual Y 3 axis works fine.  I am trying to setup a 4th rotary axis.  I used the setup wizard for steppers.  I doesn't have a XYYZA  option, only XYZA.
i attached the Y step and direction output to two outputs that appear to drive both Y motors on the Halscope. However without having a Y0 and Y1 as in the 3 axis setup I am hesitant to try driving the steppers as I am not sure they will both act in the same direction.  Looking at the 3 axis setup I would need 5 joints (0.0.0.0.0) to do this.  

Would greatly appreciate some insight.

Thanks in advance

Just take you XYYZ config and modify it by adding an extra joint and XYYZA
At this stage, you need to leave pncconfig or stepconf behind and work directly with your hal and ini