Use a manual discount to create a new coupon code or other promotion to offer to your customers

Select Marketing->Discounts & Coupons under the SEO-Cart left navigation menu.

Make sure your Discount Type is set to: Manual Discount

Locate the manual discount that you would like to modify and click the Modify link towards the right.

Modify the information that you would like to change and click the Modify button towards the bottom right corner of your screen.