Canon EOS-1 DX Mark III Advanced User's Manual page 774

3.
Add a checkmark [ ] to items to display.
Select information to display and press <
Repeat this step to add a checkmark [ ] to all information to display,
then select [OK].
Note
Regardless of the [ ] setting, relevant information appears in the viewfinder when
you press the <
the lens focus mode switch, or turn the focusing ring of an electronic MF-equipped
lens to switch between AF/MF (
>/< >/<
).
774
> to add a checkmark [ ].
>/< > buttons, move