Thanks for joining us in this thread about running reports, scottchs.
For now, we're unable to collapse columns by subclass if you're running a report by class.
We have taken note of your feedback and suggestion about getting more option to customize reports. You can see more details about what you can use at the moment when using filters for class in this article: Filter, Sort Or Total Reports By Class.
I'd also like to share a few more articles that are related to running reports in case you might need them in the future:
Let me know if you need anything else.
