Canon EOS R6 Mark II Mirrorless Camera with 24-105mm f/4-7.1 Lens - Manual (Page 697)

Customizing Playback Information Display
Histogram
You can specify screens and accompanying information displayed during image playback.
1.
Select [ : Playback information display].
2.
Add a checkmark [ ] next to the number of screens to display.
Select numbers with the < > dial.
Press the < > button to clear a checkmark [ ]. Press it again to add
a checkmark [ ].
Repeat these steps to add a checkmark [ ] to the number of each
screen to display, then select [
OK ].
Your selected information can be accessed by pressing the < >
button during playback, or by pressing < > up or down when the
shooting information screen ( ) is displayed.
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