While writing a dissertation, the most important thing is to organize. You cannot make a better start than by creating a methodical contents page. This indexes the work and makes its content easily searchable.
The contents page ideally makes an appearance just after the abstract. Thus, you know the positioning and can hardly make any mistake there. It holds its own importance just as the appendix page. When you index the pages well, people searching for a particular segment can get to that rather conveniently.
You may argue that the dissertation is itself quite exhausting and takes up much of your mental resource. In this light, it is extra burden to be scrupulous with the contents page. The counter argument is that when you have labored so much for the research page, you can authenticate and organize its structure through this page with a genial amount of labor.
Clearly, the contents page cannot boast to be the most important section of the paper. It is however one page that you should endeavor to prepare yourself. It gives you a picture of your paper (supposing you have not prepared the paper). You become more sure-footed with the presentation.
You can check out the format style tips and resolute samples to get a picture of how the content pages should be ideally assorted. There is nothing better than getting a resourceful idea.