Thanks for your help.
Article says.
Admin -> Catalog -> Products Price Manager
- Select the product
- Edit
- click the "add 5 blank discounts" button
- fill in the details
- Update
I have spent 10 minutes, including "FIND" looking for add 5 blank discounts button. Nowhere to be found. ON the other hand, it is not a discount, but a charge, maybe a negative discount?




