Just clip it on.
There is no exact location, because we all have different hands. The best start is to look where the base of your left index finger touches the flute. That is where the “saddle” part of the Flutesteady should be From there , make small adjustments up/ down and left/ right. If it feels relaxed it is good.
In Netherlands: Buy from fluitstudioshop .
Outside : here.
They are made of PLA, a biodegradable plastic from plant materials. It is non-toxic and not from fossil source. The Flute Cradle also contains parts of brass and stainless steel.
No it will not, we tried. But you must keep the flute and Flutesteady clean as dirt particles may cause scratches.