This is a design method prop that I’ve been using to help workshop goers & students of legal design. The purpose is to use the sheet to crystallize what starts as a ‘fuzzy’ good idea into a more concretely defined project.
Ideally, you would use this kind of prop after a brainstorm, when you’ve picked one, two, or three ideas with promise, to pursue. Then, spend some time filling out a sheet for each of the ideas. The process of filling out the sheet will force you to start visualizing, situating, and grounding the idea. It may even take several drafts to translate the one-line idea into a robust sheet.