How do you add a component from the Components tab to the Layout system?

To add a component from the Components tab to the Layout system, dragging it is the correct method. This drag-and-drop functionality is intuitive and is a common practice in many content management systems, including AEM. It allows users to visually place components exactly where they want them within the page layout, providing a seamless way to structure content without needing to interact with code or use any additional menus.

The other methods mentioned do not align with the typical interaction model used in AEM. For example, double-clicking might not trigger the action of adding a component and could have different functions depending on the context. Right-clicking and selecting "Add" could suggest functionality that is not standard in AEM regarding components, as the drag-and-drop method is more straightforward and user-friendly. Inserting components via the code editor, while possible, is not the typical approach for a user focused on layout design and could complicate workflows by requiring coding expertise rather than leveraging a visual interface.