Canon EOS 7D Mark II (G) Instruction Manual page 125

AF area selection method
You can set the method for changing the AF area selection mode.
When [S 9 Main Dial] is set, use the <9> to move the AF point
horizontally.
Orientation linked AF point
You can set the AF point or the AF area selection mode + AF point
separately for vertical shooting and horizontal shooting.
3 Customizing AF FunctionsN
: S 9 M-Fn button
p/
After you press the <S> button,
operating the <p> or <B> button
changes the AF area selection mode.
: S 9 Main Dial
p/
After you press the <S> button,
operating the <p> or <6> dial
changes the AF area selection mode.
: Same for both vert/horiz
The same AF area selection mode
and manually-selected AF point (or
zone) are used for both vertical
shooting and horizontal shooting.
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