I. Backend Configuration
From Admin sidebar, access to “Store” → “Configuration” → “MAGE WORLD EXTENSION”. After this step, look for “Enable Maximum Coupon Discount Amount” field, choose “Yes” to activate the extension.
To manage the maximum amount to be discounted, please go to “Marketing” → “Cart Price Rules” → “Add New Rules”
Insert the value you want it to be for the maximum discount amount.
II. Frontend Page
When you apply the coupon code:
If the discount amount is less than the allowed limit, the system will decrease the exact discount amount as normal.
If the discount amount is larger than the maximum amount, the system will minus only the maximum amount. A notification of the limited discount amount will be shown as well.