Hi James,

I am not sure I understand your question. There is an example of Zoom lens in Zemax samples. It shows a 3D layout where the 3 configurations are drawn together, one above the other, but not “on top” of each other. In that case, they use an offset of 20 in Y, in the settings

 The result is like this:

You can superimpose them with an offset of 0 but it is less clear (is that what you want to avoid?)

You may also set the image surface to be the global origin, I think it may make more sense:

RAY: 

Thanks for your detailed example.    Yes, the OFFSET was indeed missing here.    The global origin tag also helped get things setup nicely.   Thank you.