Newby topic: How to control directory search for VST plug-ins in Cubase Pro 10?

Hi, I am moving to Cubase 10 from the old Cakewalk Sonar, and even though my paths for the old Cakewalk Sonar VSTs are not in the path lists I gave to Cubase, my old Cakewalk VSTs are showing up in Cubase.

The Cakewalk VST plugins are in places like: C:\Program Files\Cakewalk\VstPlugins\Percussion Strip

This directory is not in the set of directories shown in the VST Plug-in Manager that one would think would control where Cubase searches for plugins.

How do I limit the directories that Cubase uses to the specified set that I specify? Or add directories to the Blacklist.

Sorry for the newby question.