Help:Table Of Contents
For pages with more than three headings, you will see a "table of contents" box at the top of the page if you have that option checked in your preferences.
Changing Your Preferences
The preferences dialog allows you to personalize some aspects of your RomanceWiki experience. You will find it when you are logged-in, usually the third option located in the top right corner. Click on "my preferences" and you will be taken to a tabbed page where you can change all sort of options.
To see tables of contents at the beginning of pages that have more than three headings, go to the Misc and click the box next to "Show table of contents (for pages with more than 3 headings)."
See MetaWiki Help for more on preferences.