Wherever you travel in an Office 2016 application, the Quick Access toolbar is there in the upper-left corner of the screen to help you along. The Quick Access toolbar offers indispensable buttons — Save, Undo, and Redo — just for you.
You can place one of your favorite buttons on the Quick Access by following these easy steps:
Right-click a button.
Choose Add to Quick Access Toolbar on the shortcut menu.
To remove a button from the Quick Access toolbar, right-click it and choose Remove from Quick Access Toolbar.