Ok, my a1 setting is set to Focus and the a6 (AF activation) is set to Shutter/AF-ON. I may try the other setting.
The "People" setting is found in "AF Area mode" setting. There you can select in which way all the AF-point shall be used. E.g. if you want to select each AF-point manually by using the "arrows" (up-down, left-right) to select the AF point where the camera will focus or a mode can be selected where the camera tries to be intelligent to lock on people. If the camera can see two eyes it will try to lock on the eyes. There is also an Animal mode. On Z7ii I enter this AF-area mode selection by pressing the "i" button at the back of the camera. I guess it could also be found in the menu?

Edit:
Nikon has documented the AF-mode area settings here:
https://onlinemanual.nikonimglib.com/z7II_z6II/en/05_basic_settings_01.html

After the rain - Leica Q2 - Summilux 28mm f/1.7 @ ISO 400; 1/60s; f/8.0

I like the photo!

But AFC + people will, in release terms, behave like AFC, ie it will shoot when you press the shutter button, even if nothing is in focus.  If you want to ensure focus before the first shot, in the Menu select Focus + Release. Not a setting I use, but I am sure others find it useful.

Anyway, I enjoyed your image.

The release behavior of AF-C is set in Custom settings menu> Focus> a1> on my Z8. The is release priority, release + focus and focus priority>. I would think it's in the same location on a Z7II

I recommend as many do AF-ON only. Press to focus, release to lock.

What is "+ people?" I didn't have that to my knoledge on my D850 and I haven't looked into that as yet with my Z8.

Dave

For me the Z7ii is large as it replaced the Z50 (which I still have).
The Plena does not feel nose heavy. It is easy to support with the "other" hand and it feels nice to grab around it (good grib).
I think the weight + IBIS makes it a very steady combination.

Slightly off topic, but this is great news; that means more nice previous generation lenses will be available at even more affordable prices! 

Being economical (or is it cheap), I have found that one can get a lot of bang for the buck using older generation lenses and cameras.  This is coming from someone who is having fun using older equipment.  For telephoto usage, I am having lots of fun with a Nikon D610 and a Nikon ED AF Nikkor 180mm 1:2.8 and also a manual focus Nikon Nikkor ED 600mm 1:5.6  and when I want/need semi-autofocus, I pair it with a modified Nikon TC-16A 1.6x autofocusing teleconverter. 

Maybe it is just me, but I have found a pair of primes covering the zoom range is generally lighter to carry and has better performance.  Of course not quite as convenient (or maybe the solution is carry another camera body.)