Certainly, @cmaddox! I'd be happy to help you with that. 

 In QuickBooks Online, you can easily handle partial items received on a purchase order (PO) while keeping the remaining balance open. 

Here's the steps to accomplish this:

1. Select + New.
2. Select Expense, Check, or Bill.
3. From the Payee dropdown, select the vendor. This opens a window with their open purchase orders.
4. Select Add for the correct purchase order. This adds the items from the purchase order. They appear in the Item details section.
5. Adjust the quantity or amount for each line item to reflect the portion you received or plan to pay for.
6. Select Save and close.

You can then utilize the Open Purchase Order List report to track and manage your pending purchases. This also helps you stay informed about the status of your orders with vendors.

If you have any other follow-up questions about managing POs please let me know by adding a comment below. I'm more than happy to help. Have a good one!