Settings related to audio or subtitle languages for your media. You can access these under Settings > Server > Languages in Plex Web App.
Related Page: Plex Web App
These settings only affect the owner/admin account for the Plex Media Server. If you are signed in to an account and adjust settings here, they will be reflected in the main Account Audio/Subtitle Language Settings section of your account profile.
Please see the Account Audio/Subtitle Language Settings article for details about the specific settings that are available.
Note: Shared users will need to Account Audio/Subtitle Language Settings in their account profile.
Related Page: Account Audio/Subtitle Language Settings