Step 1: Go to your spotlight search and search for System Preferences and open it.To allow macOS to install apps from unidentified developers. So let’s get on with it first- How to install apps from unidentified developers on macOS: If you’ve never used a mac before, remember you need to tweak a little setting in order to install apps from developers not identified by mac. To set up google drive on your mac, you need to download and install google drive by using an installer. How to add Google Drive to file explorer on Windows 10/11