This article will explain how to customize your table of contents - in this example so that the Namespace nodes are at the Root level. This is ideal if you wish to change the layout of the Table of Contents for your Documentation to fit your requirements exactly.
To do this, you would need to edit your Document! X placeholder node that is on the table of contents - by opening the Table of Contents Layout, and then right click the Document! X Placeholder Node and then select "Edit". From there, you will need to change the type to Document! X Placeholder (for specific Documentation type) and set the Documentation type to .NET Assembly Documentation.
Afterwards, you need to select the option to specify A custom Table of Contents Layout which I will define below this node. This will change the node on the Table of Contents Layout in such a way that you are able to see the entire structure of the nodes.
You are then able to move the Namespace node to the root by dragging and dropping the node - and you can further customize the structure if you require by moving nodes, including links to conceptual topics or even deleting nodes that you do not want to be shown on the table of contents.