If you'd like the user to enter a Coupon Code before seeing discounted performances and prices, add the Event ID followed by /promo into your booking flow URL.
Example URL - replace the number in bold below with your own Event ID:
https://tickets.mytheatre.com/event/396/promo
This will take the user to a page on your booking flow with the following coupon entry code field:
Once the user has entered the code and clicked 'Apply', they will be shown only the performances that are attached to the Discount
Once they select a performance, they will be shown only the seats/prices that are attached to the Discount