When ZPortals is authorized on the WordPress site, all modules are brought over in this menu. Some might even be as a result of Zoho CRM integration, i.e, "Google Ads" or internal CRM tabs like "My Jobs." Only true data modules will work as menus in ZPortals- those that contain records and exist as actual data tables.
Check the modules you would like your portals to view as menus and select "Update" at the bottom left. You will be able to configure the menu in the menu called "Portal Pages."