Suppose, we need to add Italian language or “it-IT” in Shortcode Ultimate. Let see: how do I add it…
Go “\\administrator\language” location.
Create a folder according to language code, if not exist. Example: "it-IT".
Then create a new file in this folder that name will be according to language code. For example: “it-IT.plg_system_bdthemes_shortcodes.ini”.
Then add language in this file as you need.