The dropdown facet type
The dropdown facet allows your users to filter listings by selecting a single value from a dropdown list. In the example screenshot below, the facet has been set to filter listings by using the listings type taxonomy.
Check this facet in action on our live demo: https://demo.posterno.com/recent-listings/
Parent Term: enter the parent term's ID if you have selected an hierarchical taxonomy as data source.
Sort by: the sorting order of the choices by count, or term order.
Hierarchical: if you've selected an hiearchical taxonomy as data source, this option allows to display indentend child terms.