So the idea here is that in order for Dramatica to be useful, you have to look at each of the story points as a source of conflict, as opposed to just something that happens.
So if I'm encoding an MC Signpost 1 of the Future by saying "Mary thinks about her future," I haven't really accomplished much. Why is Mary thinking about her Future cause a problem?
"Mary, a young single mother in a dead-end job, learns that her employment is ending. Terrified of what will become of her and her young child, she agrees to a risky, illegal caper in order to ensure her future."
Okay that might not be the best example. But the point is, you have to use the story point as a way to create problems for your characters.
Jim had a number of podcasts episodes and articles on Narrative First that were really helped me understand this. (The articles are great, but I found that listening to the podcasts even more helpful).
Then take a look at how @jhull illustrates the example stories in his playground exercise series. Actually, if you have time to do the exercises, they are invaluable (in my view).
The other resource I highly recommend is Armanado Saldanamora's Dramatica for Screenwriters. I don't think Armando expresses the "source of conflict" directly, but he has lots of examples in there of how to encode and illustrate different storyforms.