If you want to create a purchase order for more than one item, or to add to a PO with more than one product at a time, you will follow these steps:
1. Go to the Products tab in the green bar
2. Select the white checkboxes next to the products you’d like to order more of
3. Click the orange Order More button at the top of the page
4. Select the supplier you’d like the PO sent to for each product, the warehouse you would like the items shipped to, and the quantity you would like to order
5. Click Create PO
This will create a PO for the selected supplier if one does not already exist, or add to any open POs you have for that supplier.