Dave,
In reality, MS Word isn't the best app for creating flyers with tear-offs. This is where having an app like Swift Publisher comes in handy. There are other low-cost or free apps that'll do it as well and they are still easier than making them in Word.
I'm betting it's easier to make a flyer like that in Pages than it is in MS Word. Then again, I've not been a fan of using Pages (or any word processor) for flyers in general. Basic text, sure. Tear-offs? Pictures? Nope. I use an actual DTP app for stuff like that, i.e Affinity Publisher, which for me replaced Swift Publisher.
Robert