Update Address to get PR card

Hi,

I recently completed my landing by road from US and as it happened to many other people I was also asked to get my PR card when I move permanently to Canada. I have read in this forum that by updating the address online we will get the PR card mailed within 4-6 weeks. I have some questions and need some clarification from those who have already done this successfully.

1. I see Canadian Home address and Canadian Mailing address where the old address is empty for home address and old mailing address is filled with my attorney's address. My question is can I give my friends address in both section? also I dont see any option to enter my friends name as C/O. Will it be OK to just enter the address and will Canadian postal service deliver the mail in my name to my friends address?

2. In the second page I see it asks for the client # for my family members, where can i get this information?

Senior members and experts pls help.

Thanks in advance for all your help.