Form B4 & B4A explained...
http://www.canadavisa.com/canada-immigration-discussion-board/-t44793.0.html
A. No, u don't fill those numbers, they r for office use.
B. No, u don't fill separate names, it should be the PA's only, in both the Forms (if u must fill the B4A).
I'm traveling to Canada to complete my "Landing" in a couple of weeks time. I'm my POE for Landing is going to be Toronto Airport. I'm a NS-PNP so post Landing I will fly to my Destination - Halifax. My wife is the Primary and she has already done her "Landing" at the CIC Halifax Office. I'm the Secondary and I'm traveling to merely complete the "Landing" formalities. I will be staying in Halifax for 2 weeks and then return to India.
I will be carrying very less items on me (My office Laptop + 15Kg checkin baggage). I'm going to carry some medicines for my wife and few other small cosmetics items for her. I will not be traveling with any jewelry apart from the silver ring which I wear on my finger.
I will never ship any goods through a International Relocations Company from India to Canada in the future. At the max going forward each time we travel from India to Canada my wife might carry some clothes and jewelry in luggage and on herself.