I've used this program off and on quite a bit over the past year, and in fact, going back to it just this morning--after doing Move Fitness for two months--I said to myself that it's really lame you can't just do a single exercise, that is, without creating a custom workout program--which is what you'll have to do.
Outside of the 3 and 9-week programs, there are actually a few other ways to do workouts, including creating your own custom workout, doing a trainer predesigned workout (there's 18, I believe), or doing a trainer generated workout, which comes out a bit different every time depending on your filters.
I haven't even done a 3 or 9-week program since the first three months I've had this.