Which false shuffle uses an audience member to cut the deck?

also if you can give me a link or tell me how, that'd be greatly appreciatedWhich false shuffle uses an audience member to cut the deck?
this is so easy all they do is they put the cards they want in a specific order then they put those card folder things on them then they shuffle them. The audience then cuts the deck put in a 3 by 4 then they rearrange them in top and the five cards u get are the cards u wanted. Another one is that they get the cards on the top and they just keep shuffling up the cards up and the audience just cuts by 3 and folds it between making them join together again. Sorry no link i just know how they do it.