You cannot change anything about your application until you received AOR. If you send the form now it will end up in some pile that won't even be looked at before your application gets AOR.If I want to assign a family member as a representative so she can get info while I am outside Canada, should I wait for AOR or I can send it anytime? If so, where should I send it and on the form to assign a rep, what should I mention when is asks to which office I had sent the application?
The office you sent the application to is the office you sent the application to. What did you write on the envelope? It's that easy.