Issue: The user is unable to select another language in localization menu within the content type editor. When they click on the drop-down menu, only the default language shows up.
RootCause: Structured Content is not enabled.
Environment: This solution only applies to 9.2.0+ version.
1. In the Persona Bar, go to "Settings" and click on "Services" option.
2. Click on "Structured Content" and Enable button.
3. Click on Localization.
4. Select the language from the drop-down menu and click on add.
5. After the language is added, it will be listed under Content Library drop-down menu.
Content Author: Xavier Villarroel