Show book scenes in plot grid within collapsible groups that match the outline structure

If you are developing your plot line first then adding scenes you end up with all your plot at the bottom and scenes at the top until you have worked out how to map them. There are a lot of scenes in a novel sized project so its far too many to scroll up and down to find the plot points you need. Having the book scenes displayed in collapsible groups that match the grouping in the outliner far left would enable the writer to focus on the area in the story they want to work on. It might also be necessary to have the option of a window split so you can keep a plot structure in view on the bottom half of the screen, select the plot point you want, then find the book scene in the top half view and map it there.