This guide discussing when your website visitors go to www.yoursite/viewing-room and you want them to see a list of all your Viewing Rooms.
How to enable a Viewing Room landing page
If you only have one visible viewing room, your site will automatically display your one viewing room without a landing page.
Only by adding two or more visible viewing rooms will your /viewingroom page display a grid of viewing rooms. This means that even if you have multiple viewing rooms, but that all are using Hidden mode but one, the site will still only display your one viewing room without a grid on the landing page.