Hey there, jdwatson7611.

Thanks for taking the time to contact the Community for support. I'm here to offer some perspective on the differences between Classes and Projects in QuickBooks Online.

Classes are typically used as departments or segments of your business. This is beneficial for reporting purposes to see how one division of a company is doing compared to others. This article offers an overview of setting up and working with Classes: https://quickbooks.intuit.com/community/Help-Articles/Set-up-and-work-with-class-and-location-tracki....

The Projects feature is comparable to job costing. Using Projects allows you to include transactions, time, and running reports so you always know how your project (or art show) is doing. I have a write-up for you that covers the ins-and-outs of using this component of QBO: https://quickbooks.intuit.com/community/Inventory-and-projects/QuickBooks-Online-Projects/m-p/186112.

With this information, you'll be able to showcase revenue and income for your shows in QuickBooks. Feel free to contact me if you have any other questions. Take care.