Example use case :
If it is needed to choose a location, it can show the fields in this order : country -> state -> city where it will be multiple select lists of states that will show based on the country chosen. Same concept will apply for the city fields that will show based on the state chosen.
You can see the demo here :
-> search page http://demo.sobimarket.net/index.php/ssort?task=search&sid=40
-> add/edit entry page http://demo.sobimarket.net/index.php/component/sobipro/?task=entry.add&sid=40
Even though I found out from the developer that I'd just set the wrong class for the jQuery element to hide fields, after contact the developer I received a reply within 24 hours with an offer to sort it all out. 5 minutes later and he'd gone in and adjusted my settings. Very happy with the plugin and support. I'm shocked there weren't more positive reviews which is why I felt the need to voice my praise.