How do I activate / make display the video trim button and features in Captivate 2017?

This is what I see: All of the documentation and support videos (thanks Paul Wilson!) say that I should see a trim button and two “guides” or “shapes” indicating start and stop. I don’t see these in my instance of Captivate 2017. I have clicked and right-clicked every possible place but no hope. How do I force Captivate into displaying the trim features so I can use them? Thank you. David