By default, posts are sorted by the date published.

Paste the code below into your theme’s functions.php file to order the posts differently

//order custom post type posts list in admin
function posts_for_current_author($query) {
 
  if($query->is_admin) {
 
        if ($query->get('post_type') == 'members') //custom post type
        {
          $query->set('orderby', 'title'); //order by this column
          $query->set('order', 'ASC');
        }
  }
  return $query;
}
add_filter('pre_get_posts', 'posts_for_current_author');