Part 1 on a lady is easy, Part 2 + 3 is a little difficult as some girls just won't cum within a 15 minute window like us men. If we're working as MGs (Massage Gentlemens) we'd be working short shifts as we might cum before the customer if they all ask for part 3 unless we're on the blue pill + numbing sprays all day. It's hard work getting a woman to cum, and that's what gfs and wives use us for.