How do I add Class to the revaluation of foreign currencies?

I hope you're doing well, heidi-licht.

Let me share some insights about this feature. 

In QuickBooks Online, you can assign a class on customer and vendor transactions. While we're unable to add the option in the revaluation of foreign currencies page, I recommend sending a product suggestion to our product developers. They'll review this idea and might consider updating it in the future.

You can follow these steps to send feedback:

1. Go to the Gear located at the top.
2. Under Profile, click Feedback.

If you want to check the status of your request, you can click this link: Customer Feedback for QuickBooks Online.

To learn more about the class feature in QuickBooks Online, you can read this article: Create and manage classes in QuickBooks Online.

For any follow-up questions or other concerns, please let me know in your reply below. I'll be around to help. Take care and stay safe!