Go to the Wholesale Suite app and Go to "Tier discount" under "Wholesale Pricing".

Click on the "Create Discount Tier" button on the right side.

Then enter the "Tier Discount Name", select custom "Calculation Type".

Then select the content you’d like the discount to be applied on, you may apply it on your entire store, specific products, or collection of products.

Then select the customers you’d like the discount to be applied to.

Select the minimum cart requirement before a customer can receive a discount, this step is optional, but you may choose from either minimum quantity of products or minimum cart price as a condition for the discount.

Click on the Save button. 

Then go to “ Set Products Price For Custom Tier ”.

Set the product price for custom tiers.

And click on the save price button.