I'm here to help share information about Class tracking feature.
Currently, the class or location tracking feature is only available in QuickBooks Online Plus. I suggest upgrading your subscription in order to track classes/locations.
I can see how this feature would be helpful in other subscriptions. Need not to worry, I'll provide feedback to our Product Development team. This way, we can enhance this feature so they may consider this for future upgrades.
I also suggest that you leave feedback to let them know that this is a feature you’re looking for. To send feedback, just click on this link: QuickBooks Feedback.