You pinch the brach between your thumbnail an your index finger, kinda hard an fold it over slowly.
Have some cloning supplys ready incase you crack a stem.
I have to tie mine down after doin this or it will straighten back up.
I only do this in my cages outdoor cause its much easyer.
But since i have to tie it down......
I just tie em over (low stress train) cause it dosent slow the plant growth or stress em at all.