Very easy. Just lie down in front of the car (rug optional) and you can reach the adjustment knobs. Turn back 4 clicks. And make sure you have arrived at the stop, to check you are not going the wrong way, and then turn 3 clicks.
I went to 4 on the back because it was occasionally bottoming out on 3 but I found that though the ride was haarder it felt better on the road in cornering.