Nikon Z 6II Reference Manual page 692

3
C : Adjust quick wireless control settings.
•
Choose the balance between
groups A and B.
•
Adjust flash compensation for
groups A and B.
•
Adjust settings for group C:
- Select [M] to enable or [––] to
disable the units in group C.
- When [M] is selected, the units in
group C will fire at the chosen
output.
•
Choose the channel.
- For [Channel], choose the channel
(1–4) the master flash will use for
optical remote flash control.
- If the remote flash units include an
SB-500, you must choose channel
[3].
Optical AWL
650