Nikon D780 Reference Manual page 538

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 ( 0 510) and select [ c Test flash] to test-fire
the units and confirm that they are functioning normally.
6
C : Take the photograph.
492 Remote Flash Photography