How do I make online training engaging instead of just click-through?

You can build the course now. Making it something people actually engage with, rather than click through to get the badge, is the real craft, and it is right to want it. A course that no one absorbs is just a box being ticked, and you can feel the difference. Engagement doesn't come from more features or flashier screens. It comes from respecting the learner's time and attention. People lean in when the content matters to a problem they actually have, when they get to do something rather than just watch, and when it doesn't waste their minutes. Ask of every screen: would this help someone who is busy and slightly skeptical? Take one module you've built and cut it by a third, then add one real task the learner has to complete. Strip the filler, keep the doing. You will usually find that less content, aimed at a genuine need, holds attention far better than more. Engagement is mostly a matter of not wasting people.