The Table of Contents tab serves as your course outline. Clicking on any item in the outline will take you directly to that content. While some content can be created directly under the Table of Contents, it can also be created in other tools and then linked through the "Add Existing Activities" option.
In D2L, content can be created in multiple locations. Tools like Quizzes, Discussions, and Assignments are used to develop content for your course. It’s recommended to create items in the relevant tool — for example, build your quiz in the Quizzes tool. These tools can be accessed through the Navbar menus.
Some items, such as pages, can be created directly in the Table of Contents. However, content may also be uploaded to D2L, and in that case must be linked via Upload/Create > Add from Manage Files or Upload/Create > Upload Files drop-down. Items created by tools or uploaded must be linked via the Add Existing Activities drop-down menu.
For example, after creating a quiz in the Quizzes tool, you must link it to the Content Outline using the "Add Existing Activities" option. Items created in a tool aren’t automatically added to the Table of Contents. Additionally, deleting an item from the Table of Contents doesn’t remove it from the tool itself.