Generally speaking Realtors in Canada do not handle requests to locate rental properties.  These are done via property management companies who are happy to show you anything they may be managing.  In occasional situations the Realtor may be able to provide links to rental websites and if the Realtor is a Buyer's Agent may be willing to assist you in finding rental accommodations.  Keep in mind if they are doing this it is a complimentary services as there is no fee structure in place for helping you find a rental home.