Free choice on a Joker Yahtzee

When a second Yahtzee sends you to the Joker rules, score it in ANY open box you like rather than following the printed order. The one restriction stays: a Yahtzee may only be taken as a Full House or a straight once its matching Upper Section box is already filled. Officially the order is forced — the matching upper box first, then a lower box, and a zero upstairs if both are gone — which can oblige you to bin a Yahtzee in a box you were saving.