Canon EOS 90D, Instruction Manual, Page: 783 / 888

571
Custom Function Setting Items
C.Fn III-3: Custom Controls
You can assign frequently used functions to camera buttons or dials
according to your preferences for easy operations.
1
Select a part of the bar.
2
Select a function to assign.

Press <
0
> to set it.
o
With the screen in step 1 displayed, you can press the <
L
> button to revert
the Custom Control settings to their defaults. Customized operations are not
cleared if you select
[Clear all Custom Func. (C.Fn)]
.