Manual headlight adjustment

Hi everyone,

I have an 07 Roomster 3 with projector headlights.  The other week I had a low speed collision with the back of a tractor which had a scoop attached to the back.  The scoop hit just above the front bumper.  It didn't seem to do much damage, mainly the plastic grill snapped, but the nearside headlight seems to shine slightly lower than the offside.  I think it may have been jolted by the tractor.  Does anyone know where the adjustment screws are to realign it.  I can see one screw behind the grill but wondered where the others are.

Thanks for any help.