There is a Box O on the TurboTax Online Relevé 1 page. You’ll need to scroll down to find it, and then enter your Box O amount based on the code that is shown on your Relevé 1 slip. 

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Ah thank you! I was looking at all the numbers in brackets and completely missed the most obvious one.

The thing is, on my RL-1 it says "autres revenus" and doesn't say what that revenue is. I have absolutely no idea and so can't categorize it the way this form expects. Fun!