At the top of the application window, the Quick Access toolbar displays frequently used commands.
You can add unlimited number of buttons to the Quick Access toolbar. Buttons are added to the right of the default commands. You can add separators between the buttons. Commands that extend past the maximum length of the toolbar are displayed in a flyout button 
.
Note: Only ribbon commands can be added to the Quick Access toolbar.
You can move the Quick Access toolbar either above or below the ribbon.