This short tutorial will show you how to create category / dropdown menu.
How to add new pages
Click on the Pages tab and then on the arrow down on the left of the Add New Page button. Then click on Add New Category.
Type the name of the category and hit SAVE. Move the page to a position which best suits you. By clicking and dragging pages on the top of the new category page, they will be set as subcategories on the dropdown menus, as you can see now. You can also add a new page to the same category. By clicking on the Settings button, you can choose to show or hide the category from the menu and footer of the page.
To create category / dropdown menu: