To install via commandline:
sudo installer -pkg "path/to/GlobalAutoCorrect.pkg" -target /
To set the license key, for each user:
defaults write com.lexable.globalautocorrect.uservalues.plist Serial -string "license-key" e.g.
defaults write com.lexable.globalautocorrect.uservalues.plist Serial -string "12345-12345-12345-12345-12345"
MDM .mobileconfig profile - Allows GAC access to the keyboard to allow corrections. Example here: https://docs.google.com/document/d/e/2PACX-1vRduJjttMY5leA4-05_7WRh4LBXxQ1ChFVjBMIn2nOyOUuXBSANMfEbP0HYk5h50a125RFKHbsJvAOu/pub