Re: I tried following the article on enabling classes, but do not see Categories under advanced. ...
Thanks for reaching out in the Community. I'll be glad to share more info about class tracking.
The feature you're looking to activate is only available in QuickBooks Online Plus. You'd need to upgrade to the Plus subscription to take advantage of this feature. If you decide to upgrade your account, follow the steps below:
Click on the Gear icon ⚙ and select Account and Settings.
Select the Billing & Subscription menu.
In the QuickBooks Online section, select Upgrade. If you don't see it, you’re already using the plan with the most features.
Choose the plan you want, and select Upgrade.
Confirm your payment information and select Save.
Don't hesitate to let me know how you make out and if you need further assistance. I'll be on standby.