Menus are used to navigate around a website. To learn the basic skills needed to create menus, go to the WordPress Menu User Guide.
What else you need to know
The WordPress Menu user Guide explains how sub-menus typically work in WordPress:
In this example, the user dragged the menus into their current hierarchy, where "Tools" has the sub-menu item "Wordpress Migration" and "Worpress Migration" has the sub-menu items "Content Strategy" and "SEO." Using one of the GSU themes, this menu looks like this on the page:
Notice that "Content Strategy" and "SEO" are indented under "Wordpress Migration."
GSU's custom themes allow for another way to include sub menus. By clicking on the down arrow , you can access the Sub Menu drop down list:
In the Sub Menu drop down list, the user selects from other menus created for the page. In this example, the "Identity" menu is a menu created by the user:
Selecting "Identity" in the Sub Menu drop down list adds this menu's items as sub-menu items, and looks like this on the page:
If the menu will have a lot of menu and sub-menu items, creating multiple menus and selecting them in the Sub Menu drop down list may be helpful in keeping the menus well-organized.