You bet it's a lot of work. Most of it is done button by button, but you can cut some of it out by using pattern copy to copy fill in 1 of var. 1 to the other three variation fill-in 1 positions. Change the voice of fill-in 2 of variation 1 and do another pattern copy. Just be careful of where you are at all times, or you could end up starting over. The end result is worth the effort if changing one voice makes the style useful.