When you visit with a prostitute, is it acceptable while in the act to just move her how ever to the position you want her in?

You need to communicate everything before you start. If she's professional she'll expect that.

That'll probably cost extra

Nobody here really knows, even if they say they do

The customer comes first

You paid..

She better turn up in the clown costume with a pogo stick I ordered

Creep

I would imagine you would communicate what you wanted, since you’re dealing with a person. Even if you don’t think women are people, you’d be wrong.