For custom URLs: Your site will be accessible with both options; with the "www" and without.
For Appy subdomains (e.g. weddingname.appycouple.com): You should not add the "www" or "http".
For custom URLs: Your site will be accessible with both options; with the "www" and without.
For Appy subdomains (e.g. weddingname.appycouple.com): You should not add the "www" or "http".