For simultaneous optical and radio AWL, attach a WR-R10 and mount an SU‑800 or a master flash that supports optical flash control (the SB-910, SB-900, SB-800, SB‑700, or SB-500) on the accessory shoe.
Establish connections between the WR-R10 and all radio-controlled flash units (Establishing a Wireless Connection).
If an SB-500 is mounted on the camera accessory shoe, select  for [ ]. With other flash units or the SU-800, [ ] is set to [ ] automatically.
The only option available for  will be [ ].
The remote flash units can be placed in up to six groups (A through F). Place optically-controlled units in groups A through C and radio-controlled units in groups D through F. To display options for groups D through F, press 1 or 3 in the [ ] display.