Could you possibly expand on what you mean by adding a checkbox to Add Zero Plane?
Would this be in the Setup Sheet Editor that you are referring too or the setup sheet itself?
I'm referring to the initial Job Setup dialog the appears when you create a new file.
It could be a remembered checkbox at the bottom of the Job Setup dialog
I would save me the step of going to Model/Create Component/Add Zero Plane, since sometimes I forget to do that