Add 2 Features to an existing WordPress Plugin

1. Add a feature to support suppliers to this plugin, [login to view URL] It should work like this plugin: "Create suppliers and assign products to them so that the suppliers can be notified when the products have been ordered. Supplier pages/posts are also available." [login to view URL] 2. Add a feature that makes it easy to track what is owned to the suppliers and to pay them through the backend... I imagine this feature working like an affiliate plugin, link tracking but based on suppliers and their products. When a product is purchased that belongs to a supplier the system tracks what and what is owed to the supplier. When desired I would like to login to my Wp dashboard and pay my suppliers through my paypal or [login to view URL] account.