Question: I'm having a bit of difficulty understanding how to set up a modal dialog. I've set up the trigger, but where/how do I set up the content for the modal window?
Answer: The content should be added after the element (paragraph, list, etc) where you are adding the first trigger.
In Blocks view it looks something like this:
In Browser view it looks like:
The content added into the gray area is what appears in the modal dialog.