You don't need character charts unless you are writing a saga or an apply fic. But even with an apply fic, just write the general information. It is a sign of laziness. Writers should incorporate characterization and character backgrounds in the story.

Layout is simply, the formatting of your text and images. This is also unnecessary. But you can request from layout shops or purchase from the layout marketplace with your karma points. An example of a simple chapter layout: https://www.asianfanfics.com/story/view/611280/6/keeping-it-simple-layouts-gallery-themes-storylayouts-chapterlayouts
https://www.asianfanfics.com/story/view/611280/28/keeping-it-simple-layouts-gallery-themes-storylayouts-chapterlayouts