So when you go to (menu): FILE > NEW
You can see a list of items:
When you click "Text File" or "Story Sheet" it brings up the following window (both the same):
However, selecting any "template" for either option (Text File or Story Sheet; e.g. "Novel") produces the same file outcome added to the project:
Why the redundancy? If both options insert the same exact file (text document) to the project it looks like a waste of "space" and bad "designing" (layout).
Now in the Storyist Help (menu > Help > Storyist Help) it describes a Story Sheet as:
However, as I mentioned selecting "Story Sheet" from the menu doesn't display anything about a Character, setting, etc. sheet.
By the definition in the "help file" storyist; it doesn't actually insert a story sheet (or give the option to select an actual story sheet: character, setting, etc.) to insert in the project. Currently, the only way to add a Story Sheet (didn't test hotkeys; if any) is by right-clicking in the "Project list" and selecting "Story Sheet" which brings up the correct window: