Canon ICAM62B Advanced User's Manual page 208

AF Method
Setting the Initial Servo AF Position
1. Set [ 8 : C.Fn II-3: Initial Servo AF pt for c] to an option other than
[Auto].
2. An Area AF frame (1) and AF point (2) are displayed.
3. To move the AF point into position for focusing, press the <S> button,
then use the <6> <5> dials or < V > cross keys. Pressing the
< B > button will return the AF point to the screen center. You can also
tap the screen to move the AF point.
4. Pressing the < 0 > button after you press the <S> button to move the
AF point will set the current position as the starting position for Servo AF.
208
(1)
(2)