In the Administration panel, go to Products → Products.
Click on the name of the necessary product to open the Editing product page.
Open the Quantity discounts tab.
In the Quantity input field, specify the minimum number of items which must be added to cart for the wholesale price to apply. In the Value input field, enter a fixed wholesale price of one item, or the discount rate in percent.In the User group select box, you can select a user group whose members will be able to purchase the product at the wholesale price after they have logged in.
To add more than one price, click on the + icon and specify a new amount of products and a wholesale price.
Click the Save button to apply the changes.The section with wholesale prices will be displayed for a customer on the storefront similar to the screenshot below: