On the right-hand side, list all the CAUSES of the EVENT (in the central panel).
What CAUSED the EVENT to happen? What led to the EVENT?
The diagram shows 3 CAUSES, but there are often many more CAUSES of the EVENT that should be listed.
On the left of the EVENT are all the EFFECTS of the EVENT. What did the EVENT lead to? What resulted from the EVENT?
The diagram shows 3 EFFECTS, but there are often many more EFFECTS of the EVENT that should be listed.