Final answer:
The table of contents grouping in Microsoft Word is found under the References tab, which is used for creating and managing document navigation.
Step-by-step explanation:
The table of contents grouping feature in Microsoft Word is located under the References tab. This feature allows users to create and manage a table of contents that can quickly navigate through the different sections and subsections of a document. Utilizing the table of contents in classroom settings helps ensure that students and professors are referring to the same material efficiently. On computers, this feature appears in the upper right-hand corner of the page. While working on a Word document, one can also use the Review tab for functions such as accepting or rejecting changes, but for managing a table of contents, the References tab is where you need to go.