Headlight beam adjustment help

[My first toyota]

Hi

I have a 2009 verso tr but I have a small problem. The headlights beams are not level. The turn wheel in the cabin can raise or lower both beams from 5 to 0 setting but I need to lower or raise one of the headlight beams so that they're both level. 

 

Can someone please put on a diagram of the headlight unit that shows the adjustment nut/screw or show me how its done.

 

Thanks in advance.