Discounts are applied to all eligible items in your inventory unless you have specifically excluded them from being discounted.
1) Click 'Site Discounts' under the 'Commerce' heading of the Control Panel.
2) Select your existing discount from the drop-down menu and click the 'Edit' button.
3) Edit your Category/Catalog Discount.
4) When you are finished, click the 'Submit' button to finalize.
