functions.php

<?php 

/**
 * Put this in your theme or child theme's functions.php file.
 */
function en_register_campaigns_sidebar() {

	$args = array(
		'id'            => 'campaigns-sidebar',
		'name'          => __( 'Campaigns Sidebar', 'holycrosss.staging.wpengine.com' ),
	);
	register_sidebar( $args );

}
add_action( 'widgets_init', 'en_register_campaigns_sidebar' );
	

I put that code at the end of functions.php (my sidebar is Campaigns Sidebar) an added on sidebar.php the next one:

    <?php 
    dynamic_sidebar( $porto_sidebar );
    dynamic_sidebar( 'campaigns-sidebar' ); ?>

Still no sidebar showing.