Nikon Z9 Mirrorless Camera - Manual (Page 689)

689 A Custom Settings: Fine-Tuning Camera Settings
Choose the monitor displays accessible by pressing the DISP button in
video mode.
• Highlight items ([ Display 2 ] through
[ Display 4 ]) and press J to select ( M ) or
deselect ( U ). Only displays marked with a
check ( M ) can be accessed by pressing the
DISP button during shooting. [ Display 1 ]
cannot be deselected.
g12: Custom Monitor Shooting Display
G button
U A Custom Settings menu