How do I change the time zone setting?

This should be controlled by your computer's time.  Is that correct?  If not:

1. Right-click on the time in the bottom-right of the screen and select Adjust Date/Time.
2. A window will open. On the left side of the window select the Date & time tab. Then, under "Changedate and time" click Change. ...
3. Enter the time and press Change.

Hello there, shannonpingitore.

Let me bring clarifications to your concern about zone settings in QuickBooks Online (QBO).

The date and time are recorded in Greenwich Mean Time (GMT) on our QuickBooks Online (QBO) servers. Thus, when running reports, QBO analyzes the time based on the QBO server time zone which is the GMT.

Let me know if  you have additional time zone on the report. If you have other concerns, just let me know.