Okay, in that case basically get the Parchment code (not Parchment for Inform 7), and then edit the HTML to add a parchment_options object, as specified at Options · curiousdannii/parchment Wiki · GitHub
The only required option is default_story but you might like to add some of the others as well.
To have it work offline from a file: URL in Chrome, you’ll need to generate a JS version of the storyfile. See this topic for a few ways to do that: