Once installed, press “Alt + F2” and type “ccsm“.
Scroll down the list until you see the icon “Ubuntu Unity Plugin”. Click on it.
Under the “Reveal Mode” section. You should be able to see the option to hide launcher. You can select “Never”, “Autohide”, “Dodge Windows” or “Dodge Active Windows”.
The default option is “Dodge Windows”, but you can change it to “Autohide”, or “Never” if you want the launcher to be always there. There is no confirmation button. Once you have made the change, just click the Back button, or close the Compiz app. That’s it. Your Unity Launcher bar should autohide itself when not in use. To retrieve it, simply move your mouse cursor to the left corner of the screen. It will take about 1 second for the launcher to appear again.