Add a custom post type menu as a child of an existing custom post type menu. Posted bywplokal October 18, 2018October 18, 2018 Leave a comment on Add a custom post type menu as a child of an existing custom post type menu. How to add submenu Custom post type as a child of an existing Custom post type menu. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Like this:Like Loading... Related