Do you mean providing proof that you and your spouse live together? Include as much as you can to support that you are at the same address (stuff like utility bills, drivers licenses with same address on them, etc), but if you don't have at least 2 things from their list you need to include a written explanation as to why you can't provide it. They can, and do, request additional documents if they feel like they need them, but it's best to include as much as you can up front.
No, I applied for Outland and my wife is in India. My question was, can they ask the sponsor to provide additional proof of Canadian residence. At the moment, I only mentioned the address on the forms (Residential and Communication address). Can they ask me (the sponsor) to submit a lease agreement or rental receipts ?