If you see that several links are missing in the Smart Sections menu, such as:
This happens when the free version of the "Advanced Custom Fields" plugin is installed and activated.
Our plugin is equipped with the Pro version of the plugin which has all the free features plus many additional premium features. You can examine them here:
Pro ACF also helps Smart Sections to create several admin pages.
So, if you deactivate your free version of ACF, the menu items will appear.