PIO card: questions

[mmdude 1]

Hello.
I am applying for PIO card for my 8 month old baby at Chicago CKGS. He was born in US (2013) and has a US passport since birth. Both me and my wife were born in India. My wife was an Indian citizen from her birth in 1984 till 2011 (US citizen since 2011 by naturalization). I am still Indian citizen with US green card. I need help with questions below

1. Who signs the CKGS order form (I am assuming both parents need to sign it)

2. What dates should I add in the "Parental authorization form for minors" for "Do hereby authorize my child to leave the United Sates of America, from ___ to ___" ? I am just applying for the PIO card now, and I am not sure of the travel dates yet.

3. I am paying $15 for the Fedex Courier Services.Do I still need to send some kind of return envelope?

4. In the "Additional Particulars Form" on the last page for declarations, they have the following question:

I am applying for a PIO card (select whichever is not applicable)
(a) As a spouse of an Indian origin person
(b) Not as a spouse of an Indian origin person

For me option (b) is applicable, but they mention "select whichever is not applicable". Does that mean I should select option (a)? They have asked the question in a very confusing manner.

5. Should I staple sets of different forms separately? Do they have any specific instructions on how to put together the package?
How should I include the money order and 4 photos (in an envelope?)

Thank you in advance.