Click on the dropdown arrows next to each condiment to select the quantity you want (there is a limit on the maximum number of condiments you may order). Please note that you may be entitled to a certain quantity of free McNugget Sauces (Curry and BBQ), depending on your order. Additional units of McNugget Sauce will be charged at $0.50 each. For more information, please visit this link.
I would like to know more about the nugget sauce charging and entitlement policy. – McDonald's Help Center (mcdonalds.com.sg)