I'm confused by what you're asking. xD
The quickest way is to do the "PWP trick" which involves a diving suit and filling your pockets full of items villagers cannot buy such as 100 bell increments, flowers or sea shells. Then once you do that, go to the corner on your map in the water (I typically do the bottom right) and sit (float, lol) there for at least 6 minutes. When 6 minutes are up, go find a villager and run past them til they ping you.
The reason you fill your pockets with stuff is so that it limits the amount of things they can say. With your pockets full, they can't ask you to buy something or sell something. So it limits the amount of questions and therefore gives you better odds on getting a PWP request.
The one thing I noticed is that you MUST be close with them. If you are not good friends with them, they will not give you a PWP request. So make sure to keep talking to them everyday to keep that friendship up!
In order to choose which ones you get, it's completely random so you cannot pick, sadly. :C