Hi there,

We can set the inactivity preference in QuickBooks Online to 3 hours by going in your company settings. Here's how:

1. Click on the Settings or Wheel icon.
2. Click on Account & Settings.
3. Click on Advanced tab.
4. Click on Other preferences.
5. Click on Sign me out if inactive for.
6. Set it to 3 hours.
7. Click on Save.

To add, the QBO system uses a timeout duration feature that helps prevent unauthorized persons from accessing your data when you're away from your computer. Then, measures your time of inactivity from the last time you moved your mouse, clicked or used your keyboard on any transaction form.

Feel free to message us back if you have further concerns. I'll be around to help you!