Thumbnail Archive by Storyline

I’m currently looking to create an archive for a client that’s a bit different from Webcomic’s default. What they want is to display each storyline individually with navigation that moves between storylines. And on top of that, displaying each substoryline in accordian menus. Is this possible?

To help explain this I made two quick mockups of what they’re looking for here.

Now I think I know how to do the accordian menus, but I’m having trouble with the Webcomic documentation since it doesn’t give examples of how it’s used. So I’m struggling to figure out if we can navigate from storyline to storyline.

As for thumbnails, I haven’t dug into it but I believe I can switch the archive to thumbnail format using the method described in this thread. If I’m wrong there I’d appreciate any help!