Steven Zahm@ James
it is a another extension that is in development to enable advanced search. It is stable and production ready and is installed on a couple dozen sites. The reason it is not simply just sold and requires me to install is due to the fact there is no UI for configuration. It is added the page with a shortcode. The one option, to setup the multiple category search, has a somewhat complex syntax (but simply when you see exactly how to configure it) in order to set up which category parents are to be displayed, what the default placeholder text should be and what the search results message header should be. Here’s an example:
[cn_multi_category_search category="2||Select Insurance Plan|The results are being filtered by the Insurance Plan(s): %s,8||Select Specialization|The results are being filtered by the Specialization(s): %s"]
Does that answer your question?