There are i-menu shortcuts!
It should work like my Z6 iii does.
I have "AF-area mode/subj. detection" on my i-menu.
Either:
I tap the selection on my i-menu 12 choices. Now the command dial cycles through every AF mode, not just my checkmarked ones. I have to press or tap OK to set my new selection. Then it returns to the i-menu 12 choices. I half press shutter to exit the i-menu.
Or:
The i-menu shortcuts work differently when I don't tap the screen:
I press i-menu. If I see that this AF-area mode/subj is already the current highlighted selection:
I just use the command dial to cycle through the AF modes. It only shows my checkmarked choices--good. Since I didn't tap the display, a half press shutter sets the currently highlighted AF mode (no need to press OK), and exits the i-menu, back to the shooting display. Fast and efficient.
To use this shortcut method when a different i-menu 12 choice is highlighted: Switch to the AF-area i-mode choice by using the joystick or the 4-way left-right / up-down. Then when the AF-area is highlighted, use the command dial, the same as above. Now this will be the highlighted i-menu choice if I want to switch AF-modes again after taking a few shots.
~~~
The joystick center press works sort of like a display finger tap: for example, Auto Bracketing. Center press displays the four lines of bracketing settings, like the i-menu tap does. Instead, using the i-menu command dials directly only allows changing the On/Off or number of shots. So if I center press the joystick on Af-area, it works just like tapping the screen, needing the OK to set the changes.
~~~~
I suppose the Nikon design allows tapping the i-menu and being able to pick a rarely used AF mode from the full list, instead of having to go back to the Menu button and pick it there.So it's the same idea as in a complex selection, like Bracketing, that can't change all the choices with only two command dials.
It's confusing though.