Located in the bottom front of the headlamp unit. This is the Phillips head screw that is not hidden behind a rubber plug. Rotates all three mirrors and the bulbs left and right as a unit, to move the beams left and right. Turn CCW to move the beams right. CW to move the beams left.
All adjustments are very fine.
You have to turn the screws A LOT to see changes in adjustment. This procedure is best done after dark, because you will need to do some test rides. Remove the front fairing cover and lower vent grille to gain access to the headlamp adjusters. Idle the engine or connect a battery charger to the battery, to prevent battery drain. With the lights on low beam, cover the right half of the lamp assembly with the cardboard square, so only the left bulb is shining on the wall.