Canon EOS RP Advanced User Guide - Page 532

Custom Function Settings C.Fn II-3: AF point auto switching This sets the switching sensitivity of the AF points as they track the subject moving dramatically up, down, left, or right. Takes effect when [z: AF method] is set to [u+Tracking], [Expand AF area: Z], [Expand AF area: Around], or [Zone AF]. zz 0 Standard setting for gradual AF point switching. zz +2 / +1 Even if the target subject moves dramatically up, down, left, or right and moves away from the AF point, the camera switches its focus to neighboring AF points to continue focusing on the subject. The camera switches to the AF point deemed most likely to focus on the subject based on the subject's continual movement, contrast, etc. Setting +2 makes the camera more prone to switch the AF point than with +1. However, with a wide-angle lens having a wide depth of field or if the subject is too small in the frame, the camera may focus with an unintended AF point. 532