Language

This tab was changed in 2020.

Office display language

Install additional display languages from Office.com - Lets you add additional display languages. A display language determines the language Office uses in the UI - ribbon, buttons, dialog boxes, etc.

Office authoring languages and proofing

Add a Language - Lets you add additional authoring languages. An authoring language influences text direction and layout for vertical, right-to-left, and mixed text.
Install additional keyboards from Windows Settings -