You can easily turn off the invoice workflow approval in the Workflow automation menu, @hi90.

Here are the steps to guide you through the process in QuickBooks Online (QBO):

1. Navigate to the Workflow automation menu.
2. Access the My Workflows tab.
3. Locate the specific invoice workflow.
4. Click the Switch button from the On/Off column.
5. Check the invoice box that needs approval and click Approve.
6. Select Continue and hit Done.

For detailed guidance on managing approvals, please check out this article: Managing workflows in QuickBooks Online Bureau Dashboard.

Also, to help ensure customers don't forget about pending invoices, we recommend this resource: Send invoice reminders automatically or manually in QuickBooks Online. It's a useful read to help your customers stay on top of their commitments.

If you need further assistance with disabling features or have any other QuickBooks-related questions, please feel free to comment or post a new query. We're here to help you at any time.