Add keyboard layout on lubuntu 12.04

Lubuntu 12.04 seems to have a problem: new keyboard layout can’t be added by graphical menu. Seems to go back to dark times of knowing, which config file to edit… You can add the “layout switcher” (right click on the panel -> Add / remove panel items -> Panel applets -> Add -> Keyboard layout switcher), but I was not able to add any new layout to that “switcher”.

Thanks noobish-nix for a solution. The magic wordconfig file is

/etc/xdg/lxsession/Lubuntu/autostart

After @lxpanel line, add the line with your setxkbmap options, for example:

@setxkbmap -option grp:switch,grp:shifts_toggle us,ru,fi

Restart lxde (logout/login) to take effect.