Nikon Z 9 Reference Manual page 210

Set Picture Control
Active D-Lighting
Photo flicker reduction
Metering
Focus mode
AF-area mode
Auto bracketing
Multiple exposure
HDR overlay
1 The number of shots is reset to zero. The bracketing increment for
exposure, flash, and white balance bracketing is reset to 1. The amount
for the second shot in two-shot ADL bracketing programs is reset to
[Auto].
2 If a multiple exposure is currently in progress, shooting will end and a
multiple exposure will be created from exposures recorded to that point.
If [On (series)] or [On (single photo)] is selected, the multiple exposure
mode will be reset to [Off]. [Number of shots], [Overlay mode], [Save
individual pictures (RAW)] and [Overlay shooting] are not reset.
3 [On (series)] and [On (single photo)] are reset to [Off]. [HDR strength]
and [Save individual pictures (RAW)] are not reset.
Two-Button Reset
210
Option Default
Auto
Off
OFF
Matrix metering
Single AF
Single-point AF
1
Off
2
Off
3
Off