Table of Contents - Word
From Help Wiki
Making a table of contents is simple using styles and headings. Word can insert a Table of Contents for you based on the Headings you select, or you can make one manually.
The Automatic (Easy) Way:
Type a Heading on its own line in front of each part of the document you want in your Table of Contents. Click on each heading, then click "Heading 1" under the "Home" tab. Use "Heading 2," or "Heading 3", for sub-sections, or sub-sections within sub-sections. Then click where you want your table of Contents to be, and click "Table of Contents" under the "References" tab. Choose one of the automatic tables.
- Note: If you change the document, be sure to click "Update Table" under the "References" tab.
Additional Help
Microsoft documentation for manual tables and more