Canon EOS RP Instruction Manual page 397

Focusing on your preferred subject is easier than with Zone AF.
When Servo AF is used, first you will focus using an AF point < S >.
Prioritizes focusing on the nearest subject. Faces of any people in the Zone
AF frame are also given priority in focusing.
AF points in focus are displayed with < S >.
: Expand AF area (Z)
Focusing uses one AF point < S > and
points above, below, and to the left and
right < w >. Effective for moving subjects,
which are difficult to track with 1-point AF.
: Expand AF area: Around
Focusing uses one AF point < S > and
surrounding points < w >, which makes it
easier to focus on moving subjects than
with Z AF point expansion.
Servo AF operation is the same as for Z
AF point expansion.
: Zone AF
Uses auto selection AF in Zone AF frames
to cover a larger area than AF point
expansion, which makes focusing easier
than with AF point expansion.
Selecting the AF Method
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