Nikon D500 - Manual (Page 97)

97 Menu Guide
Choose the functions assigned to camera controls, whether
used individually or in combination with the command dials.
❚❚ Press
Choose the roles played by the following controls, highlight the
desired option and press the center of the multi selector:
* The lens focus function buttons can be
used for the assigned function only
when AF-L is selected with the focus
function selector.
f: Controls
f1: Custom Control Assignment
G button
➜ A Custom Settings menu
0 Pv button
v Fn1 button
V AF-ON button
8 Center of sub-selector
x Fn2 button
S Lens focus function buttons *
Lens focus function
buttons