In ONEzoo, suppliers can use Tier Price list to assign groups of customers a custom list of pricing. This pricing over-writes the pricing set for each product in the catalogue but can be over-written by Custom Pricing.
To create a Tier Price, choose "Tier Pricing List" from the Tier Price List category of the left-hand menu.
You will then be in the Tier Pricing section where you can select the "Action" button, and press "Add New Price List".
Enter the name of the tier and select insert.
You can deactivate the Tier by selecting/deselecting the status option.
Your new tier is now created!