Pre-selected category filters

Hi there :wave:

I am currently using the CMS filter by finsweet on my listing search page and the functionality is working pretty well. However, on my homepage, I want people to navigate to the search page by selecting a main category/filter since it is not immediately accessible.

How can I ensure that the search results only activate a specific category when clicked? I use mainly checkboxes. I have sketched an image to show what I mean:

Thank you for your help!

Here is my public share link: LINK
(how to access public share link)