I just installed Ubuntu 12.04. I switched to Gnome classic from unity as I'm more comfortable with the former. However, I couldn't find where the panel setting are. Usually a drop down menu appears on right-clicking the top and bottom panels. But it doesn't happen now.

I need the panel settings so as to auto hide the panels (as my netbook screen is quite small!) as well as to add the "system monitor" applet to the panel which is really useful.

Where can I find the panel settings?