38Procedures for Commander flash operation1 Setting Commander function on the SU-800.The Commander function enables the SU-800 to act as a Commander unit totrigger remote flash unit(s) without firing itself.1 Install the battery in the SU-800 in the same way as No. 1 in“Procedures for close-up flash operation.” (p. 28)2 Set the Commander/Close-up selectswitch on the SU-800 toCommander function.Use the Commander/Close-up selectswitch to change the close-up function toCommander function or vice versa.3 Attach the SU-800 to the camera in the same way as No. 2 in“Procedures for close-up flash operation.” (p. 29)BatterychamberDisplay in Commander flashoperation