Nikon Z 9 Reference Manual page 472

Custom Settings menu option
a9 [Focus mode restrictions]
a10 [Focus point wrap-around]
a11 [Focus point display]
[Manual focus mode]
[Dynamic-area AF assist]
[AF-C in-focus display]
a12 [Built-in AF-assist illuminator]
a13 [Focus peaking]
[Focus peaking display]
[Focus peaking sensitivity]
[Focus peaking highlight color]
a14 [Manual focus ring in AF mode]
b1 [ISO sensitivity step value]
b2 [EV steps for exposure cntrl]
b3 [Easy exposure compensation]
b4 [Matrix metering face detection]
b5 [Center-weighted area]
b6 [Fine-tune optimal exposure]
[Matrix metering]
[Center-weighted metering]
[Spot metering]
[Highlight-weighted metering]
b7 [Keep exp. when f/ changes]
Defaults
472
Default
No restrictions
OFF
ON
ON
OFF
ON
OFF
2 (standard)
Red
ON
1/3 step
1/3 EV (comp. 1/3 EV)
Off
ON
Standard
0
0
0
0
Exposure maintenance off