1. Click + to add a tier below the current discount tier.
2. Click Add to add a tier after the discount schedule’s last tier.
3. Select the delete tier icon to remove a discount tier.
4. Select several tiers and then click Delete to delete all those tiers
5. If you want to delete all your schedule’s tiers, select the checkbox next to the # header and then click Delete. Salesforce CPQ requires at least one tier for a discount schedule to take effect, so you cannot delete the first tier.