Creating post with chapters
Chapters are created as single Posts / PressRelease. These posts are selected in Chapters field in their parent post. So if you want to make a post A with chapters 1,2,3, you have to create 4 posts. (A, 1, 2, 3). Than go into A post and set 1, 2, 3 posts in chapters field. You can create only two level structure (parent > child).
Note: If you do not see Post Chapters box, go to „Screen options“ (top left corner) and activate „Post Chapters“ option.