Answer:
Dependant on the model (this is for a 147) and ignoring the manual adjuster switch for load height on the dashboad, when its dusk or dark drive the car up to a wall and park face on about 2 feet away. Switch on the lights and open the bonnet. Above each light unit there should be some white plastic nuts, 2 on each I think. Adjusting these with a hex socket shall move the beams left and right and up and down.