gnome-control-center/panels/common/gnome-control-center.rules

polkit.addRule(function(action, subject) {
	if ((action.id == "org.freedesktop.locale1.set-locale" ||
	     action.id == "org.freedesktop.locale1.set-keyboard" ||
	     action.id == "org.freedesktop.hostname1.set-static-hostname" ||
	     action.id == "org.freedesktop.hostname1.set-hostname") &&
	    subject.local &&
	    subject.active &&
	    subject.isInGroup ("wheel")) {
		    return polkit.Result.YES;
	    }
});