Search limited to one category

Good morning everyone, I’m probably missing something obvious but I’ve searched and searched the forums and read the docs and still can’t figure out how to limit a search to just one category. The trouble is I’ve got a bunch of files in different categories and I want to be able to show only results from the relevant document type when a user searches on that document types main page.

Is this something that can be done with the free version or is there an addon required? I’m planning to upgrade to the paid version soon anyway so that’s not a deal breaker.

Thanks in advance for any input – Scott