Welcome to the thread, KL34.

The steps provided by my colleagues above are for QuickBooks Desktop (QBDT), which is a different product with QuickBooks Online (QBO). 

The Project feature in QBO works like Job in QBDT. You can track time for the hours spent on a project. Just go to the Time column to enter the information.

Let me show you how:

1. In the left menu, click the Projects.
2. Choose the customer's name.
3. Go to the Time Activity tab to choose the Track time button.
4. On the Time Activity page, fill in the field boxes to efficiently track the project.
5. Hit the Save button.

To learn more about Projects, see below articles:

•  Set up and Use Projects
•  Projects FAQs

If you have further questions, let me know. I’m here to help and make sure you’re taken care of. Take care.