i agree with Leigh.
AND is not Parelli he had made a full programm and all the steps you have to take to get higher in the levels he had made.
Good for business and those who need a full programm.
AND is just what you are and do what your horse like to do, or make it funn for your horse.
There are not realy levels there are some excercises which are based on klassical dressage. The excercises which help the horse to find his own balance, soupleness and so on.
There are some exercises which i personaly dont like so i dont work on those parts. Some exercises (for example spanish walk) i do it every day because my pony shows it for me. To get a tread
This is for me a signal that this movement is very easy for him and he likes it to do because he KNOW that he get a reward sooner or later.
AND is for me no programm but funn with the horses. Learn from other people how they do it on their own. And sometimes i can use their info because it give you new insights to get a sertain movement done.