I found this helpful in writing mysteries and young adult stories and thought I would share it with other writers out there.
To move action forward, you write a scene. A scene is a unit of conflict lived through by your character and reader. It is mostly plot. To analyze its effects upon the protagonist, you add sequel. Sequel is a unit of transition that links two scenes. It is mostly story or emotion.
A scene is built around three things: a goal, conflict, and disaster. Every scene should provide interest and move the story forward as well as build characterization. The sequel bridges between scenes where the reader learns what the character is thinking and it’s a good place for backstory. It gives logic and plausibility of your story by explaining why your character acts the way he/ she does. Four parts consist of a sequel: emotion, thought, decision, and action.