Your multi-property website uses a property group to determine which properties will show up. We create a default property group called All Properties (as you'd think, it will always have all your properties in it).
The All Properties group is the default property group for a multi-property website. (That is how properties you add automatically show up on your website - a new property is automatically added the to the All Properties group.)
To exclude active properties from your website, you'll need to:
- create or edit a different property group
- remove the property you don't want to show up from the group
- set your website to use the new property group
Likewise, if you are not using the All Properties group for your multi-property website, you will need to edit that property group in order to add a property.