How to see videos on custom workouts?

I'm trying to make some yoga routines, but I don't know what an "arch and curl" is without looking it up. Garmin has videos for all the poses, but they're hard to find. And when I add an exercise to a workout, it doesn't show the image or the link to the exercise.

Why are the exercises for custom workouts you make treated differently? If I can see a pose on a premade workout, shouldn't I be able to see it on a custom workout? It's the same pose!