- Login as local Admin.
- Copy your application to Macintosh HD:Application folder.
- Open System Preferences -> Accounts -> Login Items and drag/add your application there.
- Open User:Library:Preferences, there you will find a file called loginwindow.plist copy it to Macintosh HD:Library:Preferences
- Make loginwindow.plist in Macintosh HD:Library:Preferences read only to all users by right click -> Get Info
- Restart
- Enjoy!