Hello everyone. I have been searching all day for a solution to my problem and this seems to come close but I need a little help. here is my work in progress site https://www.wattsweb.com.au for reference.
I am trying to get the posts (featured clients) listed on the left nav menu to highlight when I am on a category page. As you can see I have got it working so when you click on a post then the categories used are highlighted, for this I used https://kahi.cz/wordpress/highlight-used-categories-plugin/
So i am just looking to make this work in reverse. Any ideas?