You're able to adjust your website settings within the Felix PMS.
Navigate to Settings > Booking Engine > Multi Booking Page > Property Settings
Change the Sell Priority to (0 (Hide)) to hide a property.
To list a property on your website, you'll need to set a Sell Priority value to 1 or greater. The higher the Sell Priority is for the property, the higher it will appear on the website. If multiple properties share the same Sell Priority, they will be listed on the website randomly.
If you would like your properties to appear in random order, ensure that all your properties share the same Sell Priority. You're able to update the Sell Priority for all of your properties by cloning the value to all properties.