MacBook keyboard has few distinctive sections: Function keys (in light blue), which provides access to various functions in MacBook itself or Mac OS system. Let’s take a quick look at Tabs in macOS Sierra. Actually, it is a little known fact that if you press Fn (function) and Enter\return together, this is the equivalent of insert on a mac. To use the standard function keys, hold the Fn (Function) key when pressing a function key. Press Option-F5 to open keyboard preferences. Mark the All controls option at the bottom of the window under Full Keyboard Access. Use a keyboard shortcut to change the way the Tab key helps you navigate. I use Control-Shift-Tab—it’s easy to remember because it controls the way you change, or shift, the Tab key function. ⇥ means Tab right ⇤ means Tab left ⇪ means Caps lock ⏏ means Eject; There are also a few symbols commonly used to refer to the navigation keys. Tabs will be in Apple apps built into Sierra, such as Mail, Maps, ... And it will work with third-party document-based apps and the Mac’s Finder. Click the Shortcuts tab at the top of the window. By combining them with the FN key, you'll get access to F1-F12 keys, which can be associated with particular application features … If your keyboard doesn’t have an Fn key, try pressing and holding the Control key when pressing a function key. Firefox doesn’t have a setting for tab-key navigation, but you may need to make a change to your Mac’s system preferences. For example, pressing both Fn and F12 (speaker icon) performs the action assigned to the F12 key instead of raising the volume of your speakers. This wikiHow teaches you how to switch between browser tabs using the keys on your keyboard. The tabbing experience on Mac might feel a little gimped if you’re coming from a Windows machine. Open multiple tabs in your web browser. Instead, tabbing is only possible between text boxes and lists using the default setting. "There is no insert key on a Mac." That’s because, by default, macOS makes it so that the option to move keyboard focus between all controls with the Tab key is disabled. (If nothing happens, press fn-Option-F5.)