When you add a VST instrument, the respective plug-in control panel opens automatically. You can hide the control panels from view. This is useful to get a better overview if you added a number of plug-ins to your project whose control panels clutter up the screen.
Procedure
Select .
Note
This also hides VST effect control panels.
Result
The plug-in windows are hidden and sent to the back of the application. To show them again, select Show Plug-in Windows.