How to Add & Change to a New Language to Mac OS X. You can add as many languages as you want, but in this walkthrough we’ll focus on just adding a second new language and changing to that as the new language default. From the Apple menu visit “Sys

Add a Language. To add a language: Choose the Apple icon at the top left of your device. Select System Preferences. Pick Language & Region. Click the Add button (+) under Preferred Languages ...

Changing the preferred language on your Mac computer will change the language displayed in menus, apps, and websites. If the language you're adding uses a different input method than your keyboard, you'll be prompted to add it. Changes won't t