Backup sintax for file restore

Thanks, Nas I red it before install and configure backup data (also in Italian), but maybe I don't understand. Thanks to it I was able to schedule data backup on a windows host share, and OK, it works.
I can restore folder via web interface, but I can't select single file to restore, maybe it is not possible.
I can restore sigle file via console , but as I wrote I have to restore the full path, is it correct?
Thanks