Yes, Form I-3663-43 is completed, in sextupulet. The original, blue, pink, goldenrod, and buff copies are submitted and the salmon copy is retained for one's own records.
Of course not! How can the form be completed in sextupulet if it is online?
Not required, but yes, one may be nominated. Similar process, but a U-3663-43 is filed instead of a I-3663-43.