FYI: > The ENTER and the WIN keys are corresponding to the RETURN and the CMD key on real macs.
Open Terminal.app and run the following command:
sudo nano /Applications/Dorico.app/Contents/Applications/VSTAudioEngine.app/Contents/Components/vst2whitelist.txt
Press RETURN key, type your administrator password (or root password if you have root account enabled), press RETURN again to confirm.
After that, for each VST2 plugin you want to enable, you have to type their VST Plugin title into the terminal window one line per plugin.
Note that the content of this text is CASE SENSITIVE. I once mistyped “sforzando” as “Sforzando” and Dorico failed to reveal this plugin.
An example of this whitelist file is shown through the attached PNG file.
After finishing the content of this text file in the terminal window, press CMD+O and then press RETURN to save this edited whitelist text file into your local drive. Now you could force-quit the terminal app, run Dorico and see the changes.