I'll share details about the program, greg-wilken.
Time-tracking is currently unavailable in QuickBooks Self-Employed. You'll want to use a different time-tracking application to help you track your working hours.
Then, follow these steps on how you can add the time details when creating the invoice:
Feel free to read through this article to know the features that are available in QBSE: QuickBooks Self-Employed Overview.
Reach out to us again or reply below if you still need help with your invoices.