edT-2

Problem:
This site is going to have different admin users, each one with a different language and the ability to publish content in their native language by default.

Solution:
The language of any original content depends on the admin language that is selected inside the WordPress admin bar when creating a page or a post.

Further, you can set a different admin language for each user inside the WordPress profile by default.

Relevant Documentation:
https://wpml.org/documentation/getting-started-guide/language-setup/setting-the-wordpress-administration-language/