The seller can determine how much discount can be used.

Example. There is a coupon code for a 5% discount, buyers can get a discount of up to 5% of the product price with a limit of 50 dollars or according to what has been determined.

I don't think this feature exists yet. So, let's say I have a product for $100. I gave a discount of 10% which means $10. I want to give a discount of only up to a maximum of $5. So there is a 10% discount with a maximum discount of $5.

This will work very well if you want to give a 95% discount on your product for $100 but the discount limit can only be up to $5. Instead you give a discount of $95.