Explanation:
Box 1: Language packs
Before users can start using a Language Pack to display a language, the Language Pack must be enabled in your organization.
Box 2: Environment
Enable the language
These settings can be found in the Microsoft Power Platform admin center by going to Environments > [select an environment] > Settings > Product > Languages.
Reference: https://docs.microsoft.com/en-us/power-platform/admin/enable-languages