Nikon Z 7 Reference Manual page 393

Choose a flash control mode and
flash level for the units in group C:
• M: Choose the flash level manually.
• – –: The units in group C do not fire.
4
f: Group the remote flash units.
Choose a group (A, B, or C). The master flash can control up to
18 flash units in any combination.
5
C/f: Compose the shot.
Compose the shot and arrange the flash units. See the
documentation provided with the flash units for more
information. After arranging the units, press the i button in
the flash info display (0 384) and select c Test flash to test
fire the units and confirm that they are functioning normally.
6
C: Take the photograph.
Remote Flash Photography
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