OK to explain better.  I purchased a vertical slotting machine to make planetary gears.  So I will be using a rotary table and the Y axis to slowly step the the piece into the up and down cutting tool and to rotate once each tooth is finished. The thing I'm having trouble mentally with is programing or how to program the Y movement so it only happens when the cutter is up. I'll have a switch to verify up but I don't know how or where in Mach 3 to program the Y movement to move with that momentary input. Any thoughts would be very helpful.  I've been using Mach for years but this one is a new animal.