In order to sponsoring parents and their dependents, you have to file online to enter the pool to anticipate the lottery draw each year. And only that you have been selected, then you can prepare your application and file them. You cannot just fill the application up and send it to CIC, it doesn't work like that way. Also, in order to qualify to sponsor your parents and their dependents, you have to have 3 consecutive years of income to meet the minimum income requirement, although I don't know how much it will be for 5 people.