chapter format

Say, I have written a chapter (For a communal story that's not mine) and have some base ideas for branching paths, but I want to give other authors ideas to where the story could go, but I don't want to limit what they could they write by writing something for the "choices" To have an example...

PLEASE CHANGE CHAPTER ORDERING TITLES TO X.X.X.X.X.X. I BEG YOU MAKE THE MADNESS STOP! I stands for Intro. Then I.1 means intro then first option on intro, and I.1.2 means choosing the second option on the page of I.1 Is this not simple enough? Choose a cut off point for chapters over...

So I have been trying for a few hours now to get a picture inserted into a story I am working on and I am rapidly losing my patience as I am not sure if I am doing something wrong or if the site isn't functioning correctly. Thus far I have done as stated, put in the ![Image Name] (Image URL...