I have a theme where I register multiple menus in function.php. All menus have a unique name and a simple description (we just use the name of the theme so they all have the same desc but thats ok).
In our templates we use the following code
wp_nav_menu(array('theme_location' => 'sub_menu_manager', 'menu' => 'Manager', 'sort_column' => 'menu_order', 'container_class' => 'manager-menu', 'menu_class' => 'template-menu'));
Can someone explain what 'menu'=> 'Manager' does please? Thanks