To create a new purchase order in Xero from QuoteWerks click on Purchasing on the Navigation Panel or the Tools menu, or the Purchasing icon 
on the Grid Tool bar. These options will open the Purchasing window and the Purchasing tab.
IMPORTANT: Only items in orders will be available to be sent over to Xero in a purchase order. So, if you started with a quote, ensure you convert it to an order by choosing the File -> Convert to Order menu.
When opening the Purchasing window there will be two options at the top of the window. The first option will let you select items for the currently open order in QuoteWerks. If you do not have an open order in QuoteWerks, this option will be grayed out. The second option is to view the items across “Multiple Orders”.
Items that have not yet been purchased will be available under the “Non-Purchased Items” drop-down box.
Sselect the vendor from the Select Vendor dropdown list that you would like to create a purchase order for.
After making your selections you will see a list of all the items that are available. Depending on the vendor you selected you will see options to manually create a PO and/or to Place Online Order.
Clicking either of those options will open a window where you can generate the PO. Users are able to generate a PO Number. If users do not set a PO number one will be auto-assigned in Xero.
If you would like to generate the purchase order in Xero ensure that the Export to Xero option is selected at the bottom left of the window.
NOTE: When creating a Purchase Order in Xero, the Customer that each item is being purchased for is populated in the Xero Purchase Order using the QuoteWerks customer information from the Orders.
If the parts do not exist in Xero you will be prompted to create them and assign the proper accounts. After adding all the products to Xero that do not exist, QuoteWerks will create the PO for you in Xero and tell you the number for that document.
NOTE: If the item is not setup to be purchased and sold in Xero, you will not be able to create the PO for those items until you have adjusted that setting in Xero. You'll need to go to the Products and Services setup in Xero and enable that setting.
To view your purchase orders in Xero click on the Purchases drop-down menu and select Purchase Orders.