Is there a way to make a button in Rise required?

You could do something like this. Add an affirmation link using the checkbox list. That would keep it locked and they confirm they did what you want.

I also raised the same thing a little while ago and have since used the checkbox option as mentioned.

However, it does seem strange to me that this would be restricted and would make life a lot easier if Articulate allowed eLearning designers to decide whether they could do this or not based on their use case.

Hopefully this gets added as a feature request, considering it should be relatively easy to implement.