Peter - or anyone that has the zoom gear for the 14-42PZ - can the zoom gear be adjusted to operate the focus switch instead of the zoom switch? If that is the case then the zoom can be accomplished via the menu dial (after assigning the zoom control to a function button).
Out-of-the-box, you could not do it with the Nauticam gear as-is because everything is precisely aligned to move the zoom control without moving the focus control. But you could modify it. But the gear is metal (aluminium?) so it'd require some careful cutting. You would have to cut the zoom slot wider and glue some something on to slim down the slot around the focus control. You can see what I mean from the photo. The focus switch is on the left and the zoom switch is on the right.
But, even after you had that done, I'm not sure that the focus control wheel on the housing, coupled by internal gears to the lens gear, would be precise enough to make the fine focus changes required for macro.
And, IMHO, I'm not sure what problem it would solve. I had no problem doing auto-focus-lock on any tiny part of the subject then moving the camera as required. The Pinpoint AF is very precise and easy to see what is in focus. With a larger monitor, like the Shogun, it'll be even easier.
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