Nikon Z 9 Reference Manual page 451

4
f : Group the remote flash units.
•
Choose a group (A–F) for each of the remote flash units.
•
The master flash can control up to 18 flash units in any
combination.
5
C / f : Compose the shot and arrange the flash units.
•
See the documentation provided with the flash units for more
information.
•
Test-fire the units and confirm that they are functioning normally.
To test-fire the units, use the [Test flash] item in the i menu,
which can be added to the menu using Custom Setting f1
[Customize i menu].
6
C : Take the photograph.
A
Flash Info
Remote repeating options can be viewed using
the [Flash info] item in the i menu, which can be
added to the menu using Custom Setting f1
[Customize i menu].
Radio AWL
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