Thank you very much for such a prompt reply.
Not being a technical user, I would like to ask if you have a suggestion on the html to add (or a link to some example or site that explains how to move the submenu in the menu).
Also, the switcher should show in a my site as a dropdown list (whose elements are the languages of each site of a multisite installation). How to do that?
Thank you again for such a lightspeed and great support.