I’d have to take it apart, but, I’d bet underneath the drop stand there is a nut with an extension that acts as a pivot for the drop stand, and a surface for the outside nut to tighten down on, allowing the drop stand to move.
I’m not crazy about how the “drive” is supplied to the rear wheel, through the middle of the spokes, as it changes how the spokes are stressed, and how the wheel stays true, but, maybe they were low enough on torque that it isn’t an issue.
My Whizzer is a 1200cc Yamaha.
Ted