I’d like to add submenu links to each portfolio category but not to the Archive layout which is what happens when I drag a Portfolio Category in WP>Appearance>Menus. I want to link to the portfolio layout that displays when a category button (next to Show:) is clicked. I notice the sort links are pound signs each with an ID of ‘category_sort’. Is it possible to use Custom Link in WP>Appearance>Menus to achieve this? Thanks!