when printing invoices , can we show items with 0 values

Hello tom256, 

Welcome to the Community. QuickBooks allows you to manage your invoices with ease using the user-friendly interface. I'll be glad to share more info about creating invoices. 

The program allows you to add line items with zero dollar value. When previewing the invoice with a 0 value line item, the program will display that line item for you. Here's a helpful article that shows you how to: Create and send estimates in QuickBooks Online. You can also search for add-on apps on our site www.apps.com. 

Feel free to check out these helpful  tutorials/webinars that you can reference in order to cut the learning curve for QBO. You're more than welcome to ask other questions in the comments below. I'll be one message away.