I'm assuming that he is working with Query Builder reports (Site, Util, Repor Mgr UI).
I don't (yes) know anything at all about Windchill Quality Solutions but the concepts should carry over from other areas of Windchil.
These reports are incredibly important and useful, but take a lot of time /effort to develop and the documentation is minimal.
Please put him in touch w/me if you like - I can walk him thru a lot general concepts and how-to for these reports.