Adds a Custom Post Type called 'members_cpt' to the list of allowed post types.

wecr_allowed_post_types.php

<?php
/**
 * Adds the custom post type 'members_cpt' to the list of post types allowed
 * 
 * @param array   $allowed      Existing array of allowed CPT's
 * @return array  $allowed      Modified array of allowed CPT's
 */
function add_members_cpt( $allowed ){
  $allowed[] = 'members_cpt';
  return $allowed;
}
add_filter( 'wecr_allowed_post_types', 'add_members_cpt' );