Hi there, j_bonach.
 

You can customize your report's header by clicking Customize Report, then accessing the Header/Footer tab. Next, you'll need to choose which field you'd like to enter the class name in. Your available fields will be displayed in the SHOW HEADER INFORMATION section. When you're finished, select OK to save your changes.
 

I've included an image showing how it works:

You'll also be able to find many detailed resources about using QuickBooks in our help article archives.
 

Please feel welcome to send a reply if there's any additional questions. Have a wonderful day!