I'd be glad to shed light on the billable hours on your invoices and help you collapse them in a single line, @Tailwater.
The billable hours are broken down into service dates and service details to make them transparent to your customers. To add all billable hours by activity to display in just one line, let's add some filters to the transaction.
Here's how:
- Go to the + New button.
- Choose Invoices under Customers.
- Select the customer with the billable hours.
- A drawer will appear on the right side, choose the date and change the default to Group Time by Service.

- It will show just a single item in your invoice.
- Lastly, click Save to keep the changes.

Additionally, here's an article you can read to help you personalize and add specific info to sales forms: Customize invoices, estimates, and sales receipts in QuickBooks Online.
If there are other things that you'd like to see in your transaction forms, please don't hesitate to share them with me. I'll get back to you as soon as possible. Keep safe always!