Use a Pages Dropdown link if you want to easily link to a lot of pages in a dropdown.
You may provide the link Text and click to select any specific pages you want omitted from the dropdown menu.
New pages you create will automatically appear in this dropdown unless you edit your menu item and check the box to omit it. So if you want to link to only one or two pages, or don’t want new pages automatically showing up in this dropdown, consider using the manual page link menu item instead.
How to create expanding and collapsing dropdowns