The rim with a separate foot straight back enough to stand around with their little knee lift devices into the hands of the left-right toggle to raise or to one side, as in any format.
Initiate by standing upright. Separate foot restraint Knees slightly bent Lifting the hand held To lift the switch to the left - right. Or do not like the one at the time.
I have started to stand up straight, feet apart, in moderation, knees slightly bent, holding devices hold in hand, be lifted switch left right - or I'll do it one side like the picture.