skipping foward in a programmed swim workout loaded onto watch

  1. When doing a pre loaded swim workout and you want to skip a step and skip foward ..how do you do this? Example. I make a workout 400 free warm up 200 kick then 10xx100 im them timed 800 m swim. Suppose need to cut short the 10x 100 im ..after 5 i to skip to the 800 ..how to do this