Whenever you go into MUGSI later in September or maybe early October there will be a new found link for a bursary application. When applying through here you just have to put in a few details (if you've already applied for OSAP) and then you submit it and voila after that you've applied for all of the McMaster bursaries. They'll assess everyone who applies and then sometime in January (I think) you'll find out if you've gotten a bursary.
As someone else said you could also apply to external bursaries, which would take a little bit more work on your part in order to find them and receive them.

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Alyssa Brière
Materials Engineering and Society IV
Minor in French