Add the new events in the order they happen in the story. You can rearrange them later by drag and drop. the date option makes it easier to visualize the the timeline and ensures proper pacing. from the multiselect option you can choose which act of the book the event belongs to. All of these are filterable , the date and act, etc.
Write the basic idea of the scene, motivations of the characters in it and the feeling of the characters inside the page of the scene
Create the basic timeline for the story