If you change the “Heading” style after this, all the headings that use this style will be updated automatically. To apply customized headings, go through each heading and subheading in your paper and click the required style. To create a table of contents, the styles we need are labeled “Heading.” MS Word comes with a number of default “Heading” styles (e.g., “Heading 1,” “Heading 2”). The “Styles” menu can be found on the “Home” tab in MS Word. However, there’s an easier way: Use Microsoft Word’s “Style” options to create a table of contents that can be updated at the click of a button! How to Modify Styles If you like doing things the slow way, you could type this out manually and painstakingly modify it every time you make a slight change to a subheading.
Whenever you write a longer paper, particularly a thesis or dissertation, you’ll need to include a table of contents. How to Create a Dynamic Table of Contents in Microsoft Word