My question is: Where are the LyX templates that don't require installation of extra packages, classes or modules? There isn't one for a novel under New from Template.
Months ago I tried LyX without reading the manuals. I hoped could dive in and learn by experimenting. Instinctively I clicked on File, and New From Template thinking I could find something suitable to use for a Novel, based on subject matter.
I found templates titled "apa", "APA6", "JASA", "ectaart" and others that didn't suggest a design purpose. Perhaps one of those would work, but I didn't want to open each one to try to piece together to see each one's goal intent. But, after much head scratching I did anyway. Every single user template required some sort of extra package, module or class, but thankfully the dialog box let me know that this wasn't an error, just a warning that I couldn't produce output. I believe I was about to start using a template for a journal entry to the American Geophysical Union, without output. Yet, I could still use the LyX template for composition. Thankfully I discovered that in the manual first.
That was before I discovered that first the user needs to set their Class, then load the template they'd like to use. That's available when you drill down through Documents --> Settings and there select Class from the menu, and then can pick Memoir, Koma etc., for a Book, or whatever type of document you'd like to compose.
And so now I'm back to just looking for a Novel Template that's requires just the standard classes, modules and packages that LyX has. I suppose since I can select Memoir under Document --> Settings that it should be able to render PDF output.