Enter the discount code box

Good morning. I need to let my site users get a discount code.
I created the code but the insertion box in the purchase checkout does not appear. How can the field be entered?

Problem solved. thanks anyway.

Great. Just for information, to have the coupon input available:

- You need to create valid coupon codes
- You need to go to Events Booking -> Configuration, set Enable Coupon Feature config option to Yes

After that, it will be available on registration form to allow registrants to enter coupon code to get discount for the registration

Tuan