Yes. Must
Leave 1st Page blank,
In Page 2, Print Name of Principal Applicant, Date and sign down
In Page 3, check the Last box if you don't have Representative (I declare that I have completed my SINP application ................................................... behalf with the SINP) Then Print name of Principal Applicant, Date and Sign. Spouse signature and Date.
Leave 4th Page blank, but write 2-3 times in the page, between the blank lines N.A.