I need to be able to modify prices on my form with a discount applied when taking payment.

I need to be able to modify my prices with a discount applied when taking payment. I have created a credit card authorization form linked to Square but in certain cases, I will have to override the pricing to account for an exception or when someone has a discount.

Here is my page:

Under the "COUPONS" tab in Payment Settings, there's an option to create coupon and discount.

You can customize discount type and rate as shown below:

Should you have any further inquiries, we will be more than happy to help.