About Displaying the Classic Menu Bar

You can display pull-down menus from the menu bar as an alternative to or simultaneously with the ribbon.

Some users prefer using the menus when they are unfamiliar with the ribbon and would prefer

Accessing a more complete list of commands and options
Having available more drawing space at the top of the application window
Selecting descriptive words from a menu instead of icons from he ribbon or a toolbar

However, most users find that specifying actions from a menu is slower than using the ribbon, a toolbar, or the Command Line window.

The menu bar can be enabled from Quick Access toolbar drop-down or by using the CUI to customize the user interface.