How do I add like a coupon code on the checkout page?

How do I add like a coupon code on the checkout page? Like when you add a certain code and it automatically deducts the price? Thanks

Hello PapelTintaDisenyo,

Please go and edit your form and then click the "Payment" field and click the wizard as you can see in the screenshot.

Click "Coupons" tab and then "Create Coupon" button to start with.

You can set your own coupon in this page. 

But please don't forget that coupon codes are only available for regular Paypal field and Purchase Order field.

redyatech is right. Just run the payment wizard and click on the coupon codes tab to configure your coupons. You can check this guide for more details:

https://www.jotform.com/help/233-How-To-Add-Coupon-Code-in-the-Payment-Form 

I got it! Thanks very much!