Yes sorry, you’re right. The selections I’m talking about didn’t show up until Wavelab 8, and they would appear in the Plug-in Organization window.
So I guess you could either do a lot of plugin unchecking, creation of folders in the Plug-in Organization window and moving plugins around, or one of the workarounds in this thread:
Or an upgrade to Wavelab 9.
Also, you are using the latest update version, Wavelab 7.2.1 (?)
It does mention a fix for “Plug-in menu - A plug-in menu could appear partially out of screen in case too many plug-ins were listed.” But it was prior to the thread above and probably won’t make the window much more workable.