No, that is not right, however, good for you on doing all three levels in one workout! Nonetheless, is not wise, and probably risky.
No, those levels that appear in the picture are levels of difficulty. Level I being the easiest while Level III is the hardest. You can check the
Manual for more information about it. You may also take the
Fitness Test in order to have an idea about what level of difficulty suits you the best for workouts, programs, and challenges with different levels of difficulty.