Canon EOS R5 C VR Creator Kit with RF 5.2mm f/2.8 Dual Fisheye Lens - Manual (Page 696)

2.
Select a camera control.
3.
Select a function to assign.
Press < > to set it.
You can configure advanced settings for functions labeled with
[
] in the lower left of the screen by pressing the < > button.
Note
[ : Customize buttons ] settings are not cleared even if you select [ : Clear all
Custom Func. (C.Fn) ]. To clear the settings, select [ : Clear customized
settings ].
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