G10: Limit Zebra Pattern Tone Range; G11: Grid Type - Nikon Z 9 Reference Manual

g10: Limit Zebra Pattern Tone Range

Choose the tone range shown by a zebra pattern when a control
previously assigned [Pattern tone range] is pressed. If [Highlights] or
[Mid-tones] is selected, pressing the control will display a zebra pattern
only over areas in the selected tone range; pressing the button a second
time hides the zebra pattern.

g11: Grid Type

Choose a framing grid for video mode. The selected grid can be
displayed by placing a check ( M ) next to b in the list for Custom Setting
g12 [Custom monitor shooting display] ( 0 689) or g13 [Custom
viewfinder shooting display] ( 0 691).
A Custom Settings: Fine-Tuning Camera Settings
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G button U A Custom Settings menu
G button U A Custom Settings menu