BMO STRUCTURED NOTES

To be honest, the explanation of callable notes is too much to write out here and you'd likely benefit much more from a video explaining it. Here is a very good one that should have you understanding these products in 5~ minutes
https://www.youtube.com/watch?v=YAKYA2LosN4

I am far from an expert on these products. But what it looks like happens is if the underlying asset your note tracks finishes in the green over a particular time period, your note gets called and you get the coupon. If it doesn't, the coupon rolls over to the next year and it continues.

Again, I'm not an expert with these products but the main risks to me seem to be the fact you could very easily underperform the underlying asset. Your initial investment is also not guaranteed, although some of these seem to have guarantees of some of the initial investment. And finally, there is likely little liquidity with these.