The Quick Access toolbar contains commonly used commands and can be customized to suit your needs.
Once you are familiar with ribbons and their commands, you can add or remove buttons to/from this toolbar.
To access the Customize Quick Access Toolbar menu, click the arrow on the right side of the toolbar.
To open the Customize dialog box, click More Commands.
When the Quick Access toolbar is located above the Ribbon bar (see the red rectangle in the picture above) and you want it to be displayed below the Ribbon:
Access the Customize Quick Access Toolbar menu, click the arrow on the right side of the toolbar. click Show Below the Ribbon from the list.
If you wish to reverse this action and put it back above the Ribbon:
Access the Customize Quick Access Toolbar menu, click the arrow on the right side of the toolbar. click Show Above the Ribbon from the list.
Minimize the Ribbon to minimize an expanded Ribbon:
Access the Customize Quick Access Toolbar menu, click the arrow on the right side of the toolbar. click Minimize the ribbon from the list.