Type 1-4 is the type of holder (tooling setup) that is being used. Box tooling off to the side, straight inline with the spindle, etc. You need the Operating manual or something so you can see what the generic holder types are. This is an Integrex 200 right? You call it 'mt' so probably Fusion MT? When you get to the field to select holder type, you should also see a simple sketch show up on the control menu buttons. It's basically to set the control up for the interference barriers. I don't think you have to set a holder type to run... Group no. is for Tool management....