I am a new Ubuntu user. I was curious to install it. But I have some difficulties to understand the options in the system preferences. It's because I don't know if an option is on or off (see picture).
This means it is ON.
This one makes it more clear: when 'auto-hide the Launcher' is set to OFF it grays out the selections that would be available if 'auto-hide the Launcher' was set to ON: