Shows a chosen menu only on pages with a certain label:

genesis_menus_labels

//* Remove the primary navigation menu
remove_action( 'genesis_after_header', 'genesis_do_nav' );

add_action('genesis_meta','dynamik_show_primary_navigation');
function dynamik_show_primary_navigation() {
    if ( dynamik_has_label('show-primary-navigation') ) { 
        add_action( 'genesis_header_right', 'genesis_do_nav' );
    }   
}