Welcome aboard to the Community, gailbalt.
QuickBooks Online is like a diary of your business that keeps track of what’s happening to the actual transactions. If your client wishes to continue using the software, you can consider integrating it with the online program. This is to ensure all entries are recorded in your company.
To connect the app, I suggest contacting their customer support for further assistance. Otherwise, use QBO to track your client’s business data.
Let me share these articles to get acclimated to the product’s features. These resources contain tutorials for visual reference. It includes the articles on how to create a bill or invoices for your sub-contractor.
Click the Reply button if you have any clarifications or other concerns. I’m always ready to help you. Wishing your business continued success.