Hello. I am stumped and I cannot seem to figure out how I can place a search-filter (or category filter plugin) Box in the search-results.html page. I cannot seem to find the search-results page in the list of pages when one edits a content box and its placement.

I was trying out also the refine Search box but I cannot seem to make it appear in the search-results.html pages.

I presume that the best place to put a category filter box or search filter box is in the search results.