Hello, @Connolly Contractors Inc.

Thanks for joining the thread. Allow me to chime in and help locate the class tracking box in QuickBooks Mac.

If you're referring to the class tracking on your forms, you'll need to set this up on the Transactions preferences first.

Here's how:

1. Choose QuickBooks then Preferences.
2. On the Preferences pane, select Transactions.
3. Make sure to set the Use class tracking.
4. When you're done, close the Preferences window.

Setting this up will include a Class field for all transactions. 

If you need some help articles in the future, please feel free to check our site: Help articles for QuickBooks Mac.

Let me know if you have other questions about managing classes in QuickBooks Mac. I'll be here to help however I can. Have a good one.