Re: Save the first chapter without publishing?

As far as I know, there is not. But you can edit a submission even after it's in moderation queue, and once it's approved you can continue editing.

I'd suggest using google docs or something else external to write and revise your first chapter on, then copy over the completed draft. Or, what I've done in the past, is to work on it as a draft to a different story and only copy it over when it's done. :)

Good luck! peoapproval