About 28 scenes and 24 scenes

Melanie Anne Phillips said, “In short, the 28 scenes are a storytelling technique while the 24 scenes are a structural component.” I didn’t understand the article because of language barrier. I know how to build the 28 scene and the 24 scene, but I don’t quite understand when to use the 28 scene and when to use the 24 scene. Can I use it alone or can I mix it? Help…Are there any examples of their use? :blush: