Board Thread:General Discussion/@comment-37653663-20200202162221/@comment-9605025-20200202200025

Well, I supposed we should have started be getting clarification on what you mean by "MassCategorizer". Are you referring to MassCategorization? If so, then what we said is correct.

You enable personal JS in your preferences. Scroll down to the "Advanced display options" and check the box next to "Enable personal JavaScript (Learn more)".

This will help because the MassCategorization requires personal JS to work. You can follow the installation instructions on that page.