Christian Acosta

I’ve been wondering how people in DCI learn drill, do they give it to them prior to them getting on the field so they can study it , or do they have it on the field and go from set to set , or is there another method to it ? Also , how does the colorguard write the show ? Do they write it beforehand and then just apply it to the field or do they write it ON the field at the moment? Last question , when do they determine who is in which lines ( like flag line , rifle line , sabre line ) ?