Canon EOS 90D Advanced User's Manual page 131

Selecting the AF Area Selection Mode
With [ 8 C.Fn II-7: Select AF area selec. mode], you can limit the selectable
o
AF area selection modes to only those you want to use ( = 563).
If you set [ 8 C.Fn II-9: AF area selection method] to [1: G 9 Main dial],
o
you can select the AF area selection mode by pressing the < S > or < G >
button, then turning the < 6 > dial ( = 564).
Selecting the AF Area and AF Point (Viewfi nder Shooting)
1
Press the <S> or <G> button
(9).
2
Press the <G> button.
Each time you press the < G > button,

the AF area selection mode changes.
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