Thank you for the advice... by the way I'm just now trying to understand completely how the system works with the members of my group.
As I've understood from this page, if I just install the language in the system, by some weird (haha It's a joke

) magic multilingual features would appear so in the editorial process I can translate all the articles in my journal before publishing so it will be a multilingual journal, isn't it?
Thank you all in advance.