I need 8 Karma to post comment, so I''ll write my question in answer section...

Thank You Sehrish for comment. I found group: "User types / Public" I believe it is group for normal viewers. 

When I edit this group I see "Access Rights". I see that I have "Read Access" on "Website Menu" "Object". I think it's good.

But I don't see website menu in another language.

I suppose that should be the same "Object" in other language. I can't find it. If I''ll find it I will add new "Access Right" to this group.

On which "Object" should I make "Access Right"?

Maybe I should make "Object"? Which "Model" should I use?