The Rule Groups panel displays the names of the Rule Configuration groups associated with the messages related to the files selected in the Files panel. For a combined C and C++ project, separate groups for each language can be seen.
Perforce QAC Analysis Explorer: Files Panel
Perforce QAC Analysis Explorer: Message Levels Panel
Perforce QAC Analysis Results Panel
Perforce QAC Project Analysis Errors Panel
Options: Analysis Settings Dialog
Options: Perforce QAC Logs Dialog
Options: Perforce QAC Options Dialog