How to reference from admin panel that X page is a language version of original?

I cannot find the way how can I reference from admin language version of an article.

So I have my base article written in English and now I would like to write same article in Japanese. I cannot see the way I can I achieve it from admin panel other than by creating new page and saving it in Japanese. Yet, this won't let me reference original article and it's language versions :(

SOLVED. I figured it out - here is solution if anyone wonder same:

Basically if you want to do a translation of your article, click an arrow next to "Save..." and select the language you want to have translation in. Grav will copy original article. Now, simply delete all and start writing in chosen language. Save it and the post will be stored under same directory with post.xx.md where xx is locale code 🤓