Thanks for joining this thread, @DAG001.

There's only a default Purchase Order template in QBO. There isn't an option to add the Quantity column for now. Another way to do this task is by using and integrating a 3rd party app. 

Approved and supported applications for QBO are found on our App Center. Since each businesses needs are different, we don't recommend or advertise any application to our users. You can scan through the app list to select the appropriate one for the size and needs of your business.

If there's anything else you need or you have other QBO questions or concerns, just leave a comment below. I'll be here for you.