The following setting options are available on the VST Plug-ins tab:  
Display area
Installed VST Plug-ins
Shows the currently installed VST plug-ins.
Button
Delete
Deletes the selected VST plug-in.
Button
Add Plug-in
Opens the Open dialog box. Installs a new VST plug-in.
Check box
Include sub folders
Searches for new VST plug-ins in the specified folder and sub folders.
Button
Scan Folder
Opens the Open dialog box. Searches for new VST plug-ins in the specified folder.
 


VST Plug-ins Tab