For each Feature there will be a page which will list any classifieds that relate to that Feature. To set this up so it only displays the relevant classified categories you -

• Set up a new Post
• To add the classifieds go to the + top right of the page
• Start typing "Classified" in the search bar to see all options
• Select "Classifieds List"
• In custom post type you only have one option - Classifieds so select this
• Apply
• The in the right hand block options select "Filters/Taxonomies"
• Add your category slugs into the Adverts Categories box - NOTE this has to be the category "slug" to work
• You can get the slug by going to the categories tab under Classifieds to copy and paste
• If you want to put in more than one category separate with a comma