Creating content in specific languages requires a user to be a member of an appropriate role that has support for the required language.

Press the dropdown next to the New entry button. A menu will open.
Select the New entry (other language) option. A list of content types will be displayed.
Choose the content type you want to create an entry from. You'll be taken to a list of available languages for that content type.
Select the required language.
A new entry will be created and the selected language variation will open for editing.
You can now populate the fields for the new language.
Press Save after any changes – the minor version will increment upon each save. When you have finished, press Submit to send the entry for approval, or Publish if the workflow allows. Once approved and published the language variation will now be available through the Delivery API, without requiring the default language.

Create an entry in a different language outside the translation workflow

Create an entry for a specific language