You can create a drop down sub menu from one of your main menu pages, so that when a site visitor hovers over your main menu item, your sub menu appears. To do this, click on ‘design’ then ‘menu’. There is an option to enable pop up menu – select this option then save changes. You can now set how the sub-menu should look when popping up upon hovering over.
To add website pages to your sub-menu
Go to page list and then:
If you have already created pages you would like to include in your sub-menu, click 'properties' next to one of those pages and select a 'Page Location' of "Subpage of (the main menu page the sub-menu will connect to)'.
If you need to create new pages to put in your sub-menu, simply click 'add page, select your preferred page type and select a 'Page Location' of 'Subpage of (the main menu page the sub menu will connect to)'.