Drop-Down Menu

Yes, see this demo of the free version: https://wp-themes.com/responsive/

Yes, it is possible.
First add a new page and than go to appearance/menus.
Add new menu.
And then add the page to the menu.
You can movu pages in the menu if you wont to be in submenu.
See this picture: [Redacted by a moderator – Please use a cleaner image hosting service like https://snag.gy ]

Cheers!