- Click on Subscription and then click on the subscription you want to add the discount. The list of subscription products will appear on the right-hand side.

- Click on the advanced overrides drop-down menu, select Discounts and click Go.

- A pop-up will appear like the one below. Click Add Discount.

- Fill in the fields to add a new discount and click Add.

- The added discount will appear in the grid as shown below. Click APPLY to save the discount on the subscription product
​
The discount will automatically be included in the invoice once the above is done.