[Steven Zahm]

@ Joe

Yes, I submit the form via a get action. The query variable being set for the category search is cn-cat-in. The target page simple has the [connections] shortcode. the code that performs the query as builtin support for the query var. The cn-cat-in is an operation AND. You could use cn-cat instead to perform an optional OR search.

Does that answer the question?

The file where the query vars are being used is here.

As you see, they are many query vars that can be utilized.

Hope that helps.