Users are able to utilize Panels to add more content to specific menu options. By utilizing mega menus, additional content types can be added to a normal menu, allowing for things like photos, and links to be added to a page.
Add a panel to an existing menu
Select Pages & Menus.
Create or Edit a page.
Add a Mega Menu type onto a page and then select the menu you'd like to use.
Once the menu loads in, users are able to select which panel will appear on each menu item.