I’ve added several sample regular expressions for Title grouping regex and Path grouping regex that you can select from the new drop-down button menu:
Most snippets are added as an additional OR expression to the beginning of the corresponding regex, except Revert to default and Group all directories that replace the regex. Class is just a placeholder in title snippet names – corresponding regex will work for any class name. Same with Dir and Subdir in path snippet names.
For example, here is the effect of adding all 3 available Title grouping regex snippets on tabs grouping: