I came to canada on a work permit to an employer and after that I was able to get my family to Canada on visitor visas. After coming here my wife applied and got an open work permit. After my elder son started going to college he got a study permit. Other two kids (10 and 15) don't need any as the visa states they can study until post secondary with the visitor visa. Later I was laid off from my employer and I was able to make a new work permit under a new employer. So I have already got my own visa under the new employer until March 2014. But my wife and kids' visas expire on February 2013. Can someone help me with how to apply for their extensions and what forms are needed for them. Do I need to apply as they are still dependants under my visa? Do I need to make separate applications for them?