CustomFit has many different design choices.
I chose to use the custom sweater wizard. First I knit two generous swatches with my yarn, Malabrigo Rios (Worsted: 100% Merino, 210 yards). When I say generous, I mean 40 stitches and 40 rows. Since my yarn was a superwash, I washed by swatch and let it dry. Then I decided with swatch was the fabric (feel/look) I wanted for my sweater.
My design choices were: Cardigan, mid-hip length, long sleeves, deep v-neck, 2" twisted k1, p1 ribbing, and average fit. There are 3 fit categories to choose from: close, average, relaxed. We plugged my measurements, swatch details, and design choices and out came a terrific pattern. The directions were completely clear.
I've actually cast on for my next CustomFit sweater.