Canon EOS RP Instruction Manual page 402

Selecting the AF Method
The camera will keep moving the active AF point < S > to track subjects
o
for Zone AF when Servo AF operation is used, but under some shooting
conditions (such as when subjects are small), it may not be possible to track
the subject.
Focusing may be difficult when using a peripheral AF point. In this case, select
o
an AF point in the center.
With [ 8 C.Fn II-6: Orientation linked AF point], you can set separate AF
o
points for vertical and horizontal shooting ( = 534).
194
3
Focus on the subject.
Aim the AF point over the subject and
z
press the shutter button halfway.
When focus is achieved, the AF point
g
will turn green and the beeper will
sound.
If focus is not achieved, the AF point will
g
turn orange.
4
Take the picture.