Unfortunately, our theme doesn’t have it by default. This requires additional customization. It is beyond our basic support scope.
If you need help with additional customization you can contact WP-Kraken team.
Can you point me in the right direction, if I wanted to simply add some coding the fixed header, where do I go, wheres the file/folder, I can see all the headers folders, but can’t find the fixed header element
In this case, you need to know that fixed header base on standard header. You can copy themes/royal/headers/parts/top-bar.php content in a file of your header-structure and write some custom css code to display header well.