You can update and edit the MacBook touch bar through your desktop or app preferences. Christoph Dernbach/picture alliance via Getty Images There are three main ways to customize your MacBook's Touch Bar, including the general touch bar settings, control panel, and touch bar for apps. You can add or remove buttons on the Touch Bar by dragging them into or away from the Touch Bar using your trackpad or mouse. App-specific Touch Bar buttons can be customized while the app is open. Visit Insider's Tech Reference library for more stories. If you have a MacBook from 2016 or later, you've probably noticed the Touch Bar, a small touch screen located above the number keys on your keyboard where the function keys should be.