Mac OS X High Sierra

How to achieve level 2

System Preferences > Security & Privacy > General tab

Allow apps downloaded from:

  • [ ] App Store
  • [X] App Store and identified developers

Open System Sreferences and look for a screen similar to the one shown in the link below. If you see such a screen, grant Pluckeye permission to install.

mac-13-high-sierra-security-and-privacy.png