Yola Silver and Yola Gold account holders can create submenus. A submenu is a secondary page of the main page on your site.
Using submenus means you no longer have to worry about only being able to add a certain number of pages to your website because you will run out of room on the header.
This allows you to create a deeper selection of pages and that you can have a more complex, better ranking, website.
For information on how to set this up, please read this tutorial.