This is a bit of a honors kid..overthinking question. Please disregard if it's not relevant to your specific class. Each can order the new item with the others ordering the other entree. Ex) Al (new order) the rest all order their regular meals, Bob (new order).. etc. You can order it 5 different ways, OR why not try the entree additionally WITH the entrees they usually order! No one is stopping them! (Unless your instructor told you not to think critically, that's harsh. Don't listen haha. Overall, you have an amount of 5 (6) ways it could be ordered.