We have 3 categories of events with different rates. We give a discount for groups or 5 or more, but WA does not have a way to set parameters so it automatically rejects a single individual ( or someone with a group of less than 5) registers for the discount. Rather than manually monitoring errors to make sure only a group of 5 or more gets the reduced price at registration and notifying them of their error, it would be best to have WA automatically reject registrants who incorrectly register for the reduced price so they are blocked from doing so.