E-Commerece Coupons

Does anybody know if it is possible to limit a coupon to one particular item in one’s store?

In e-commerece – Marketing…I am able to add a coupon to my store. However, there is no option to limit the coupon to one particular item. Once created, the coupon is basically just a general coupon that will take the defined price off the entire shop order.

How do I limit the coupon to one particular item???