More than one discount can be used in all sales methods, but will not discount more than the total amount of the transaction. For example, if an order totals $13 and you use two $5 discounts, you will not be able to apply a third discount. 

Two discounts cannot be applied to the same ticket.  When an item is eligible for two discounts, Altru will apply the discount that is a better value for the customer.  For example, if a person is purchasing one admission ticket, Altru cannot apply a $3 discount and a $2 discount.  In this scenario, Altru would apply the $3 discount to the admission ticket.