Nikon D500 Settings Manual page 53

Recommended AF Settings by Event
Instant AF-Area Mode Selection
For flexible AF-area mode selection
when photographing approaching
runners, select 25-point dynamic-area
AF with the camera and assign group-
area AF to the focus function buttons
using Custom Setting f1 (Custom
control assignment) > S Lens focus function buttons
(page 26). You can then press a focus function button to se-
lect group-area AF when your subject is far away and release
the button as the runners approach to instantly switch to
25-point dynamic-area AF without taking your eye from the
viewfinder.
Group-area AF 25-point dynamic-area AF
(distant subject) (runner approaching)
53