Move focus between buttons in confirm dialogs OS X Yosemite 10.10.3
There are two ways to allow the Mac to move focus between dialog boxes.

One is by going into System Preferences &gt; Keyboard &gt; Shortcuts and clicking the All Controls Radio button on the bottom.



Another way to do is is by hitting Fn+⌃+F7 to toggle between All Controls and Text boxes and lists only (^+F7 if you haven't switched the apple media keys to Fn keys).