I believe your plugin is just what I am looking for. I've uploaded and activated the plugin but there is no Zen Menu Logic in Settings.
I have registered 2 menus
that show up in Menus and have created 2 custom menus. I believe all I need is the 3rd step - Settings.
<?php register_nav_menus( array( 'home_menu' => 'Home Menu', 'general_menu' => 'General Menu' ) ); ?>