Canon EOS R5 C VR Creator Kit with RF 5.2mm f/2.8 Dual Fisheye Lens - Manual (Page 312)

Active Touch Area
You can specify the area of the screen used for tap and drag operations.
1.
Set [Active touch area].
Note
Tapping the screen when [ +Tracking ] is set displays a round orange frame [ ].
After you lift your finger at the position to move the AF point to, [ ] is displayed
and that subject is tracked. To cancel subject selection, press < >.
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