By default, the hosted website (multiple properties template) provides a Properties page that lets guests search and drill into all properties on the site.
Sometimes you also want to create additional pages with a subset of properties, perhaps for different areas or groups, such as pet-friendly or not. There's no built-in feature to do this, but you can accomplish it by creating an Availability/Property search widget and embedding it on a custom page on the site.
Navigate to Settings > My Website > Widgets > + Create Widget > Availability/Property Search (Multi Property).
Configure the widget for the hosted site, select the Filters (e.g., Bedrooms, Bathrooms, Guests, Location), the specific properties you want, and add a name so you can identify it later.
After you save your Availability/Property Search (Multi Property), open it by clicking it, then click the Change button at the top. In the Generate Code section, copy the widget code.
Go to Settings > My Website > Hosted Websites, click on your hosted website, and create a Custom page.
You now have a custom page with a search widget that can search other properties. Add a bit more info in the content area about what makes that set of properties unique, maybe tweak the menu ordering, and you're done.