They both need to be adjusted together and do it properly.
Part the car facing a wall in a parking garage. Measure back 25 feet from the wall and park the car with the bumper 25 feet back, Now measure from the center of the lights to the ground. Go to the wall and measure the same height and draw a line or mark with tape. Now adjust so the driver low beam is straight ahead and the center of the beam is 2 inches lower than the tape line. Now the passenger side should do the same except be canted out toward the side of the road. If you can't park that far away do some divison to get it spot on. IE 12.5 feet have a 1 inch angle. For the fogs do the same thing except they will have a second and much lower tape line.
For faster adjustments a battery operated drill at slow speed works wonders.
Hopw it helps.