is it possible using AIO to create a settings page then a submenu settings page, and have custom post type within that submenu? at the moment i can only create the CPT within the settings page and not the 2nd level submenu.
Do you mean to add a menu of a custom post type under a menu of the settings page? If yes, it is possible. Please edit the post type in Meta Box > Post Types > Edit a post type > Advanced tab > Show in menu: Show as sub-menu of a settings page. Please check this screenshot https://monosnap.com/file/zzv4E5nAgSoRpltCDUbiBxHqbws83T
i would like the opening hours and Menu to be in the pizza truck settings page. opening hours and menu would each be a submenu in pizza truck settings page, and i could put posts (From the custom post type) into those submenus.