At 25 feet, you want the horz cut-off on the wall [low beam] to be 2-3 inchs lower than the height from ground to the center of the light on the car...[ this will be a 2-3 inch dip]

For r/l aiming, a good way is to place a piece of tape exactly in the middle of the rear window and stand behind the car, and using the Benz Star hood emblem/tape as a sight, have someone mark the wall where you direct them .. from there adjust the r/l equal distance from the center line , 1/2 the distance of the center/center measurement of the lamps on the car.....
This give you straight ahead aiming in direction of travel..
There is NO high beam adjustment w/E code...