Looking for suggestions on how I can complete invoices/jobs in order of due date for customer

Are you run a field service business? Do you have any specific issue?

Hello there, chriswyso.

Due dates are based on the Terms used and the Due Date entered in your invoice. However, if you're referring to the Projects feature where you'll want it to mark as Completed, here's how:

1. Go to the Projects menu.
2. Look for the project.
3. Click the drop-down arrow under the ACTIONS column.
4. Select Mark as completed.

If you have further questions with managing your project, you can refer to the resources below:

• Set up and create projects in QuickBooks Online
• Projects FAQ

Feel free to mention me in your reply if you need more help. You take care and have a great day!