Hi Glenda7,
I appreciate you reaching out here, so you can ensure your client is on the right path. Although QuickBooks Online provides options for recording transactions, it's vital that we remain aligned with government guidelines. With that being said, it's beneficial to take advantage of the Receipt function whenever possible, to upload expenses for tracking purposes. This will also provide complete access to all transactions, should an audit ever take place. I hope this helps!
Please don't hesitate to reach out again if other questions or concerns come to mind. We're here for you!