You can create your suppliers in Simple Inked, and then assign them to your product brands. Once you have done this you will be all set up for stock Ordering, the ordering process will work seamlessly.
Go to your Admin page, select the Lists tab, and choose Suppliers from the drop down menu. ClickNew, fill out the Supplier Details on the right side panel, and Save.
The supplier will be listed under your Suppliers list.
Assigning your Suppliers to your Products.
Still in Admin, head across to your Products tab. Under the Brand section, click one of the suppliers Brands.
In the Products For (Brand) section, Edit a product and on the right side panel choose the products supplier from the Supplier: drop down menu, and Save.
Now that you have assigned the right supplier to the right product, when you process product orders via Ordering, the supplier will be automatically applied to the order form.