Canon EOS-1D X Mark III DSLR Camera (Body Only) - Manual (Page 787)

3.
Select screens.
Turn the < > dial to select screens of information to show on the
camera.
For information you prefer not to display, press < > to clear the
checkmark [ ].
To edit the screen, press the < > button.
4.
Edit the screen.
Turn the < > dial to select items to show on the screen of
information.
For items you prefer not to display, press < > to clear the checkmark
[ ].
Select [ OK ] to register the setting.
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