When undertaking to sponsor your relatives, you will need to show proof that your income meets the guidelines. Your spouse can co-sign if he/she agrees to. If your parents or grandparents are wealthy, and you are not, they may need to legally "arrange" an income for you.
Processing times for parents and grandparents are lengthy. As a result, Citizenship and Immigration Canada has announced a moratorium on accepting new applications in this category. A new "Super Visa", whereby parents and grandparents can stay in Canada for up to 24 months has been announced.
Specific details may vary in individual cases, so you may wish to Contact us or pay for an initial consultation before you initiate the sponsorship process or apply for the "Super Visa".