Which command is used to create a new component in an existing assembly?

The "Create New Component" command is specifically designed within Fusion 360 to allow users to create a new component directly within an existing assembly. This command simplifies the process of integrating new parts into an assembly by establishing the component’s properties and relationships with other components right from the assembly environment.

When you use this command, it automatically takes care of associating the new component with the assembly, enhancing the organization and structure of your design. This is particularly useful in large assemblies where keeping track of multiple components and their relationships is crucial for effective design management.

In contrast, "Insert Component" typically refers to bringing in pre-existing components from other files or libraries rather than creating a new one. "Add Component" may cause confusion as it might imply different functionalities depending on context. Similarly, "Component Builder" is not a standard command in Fusion 360 for the creation of components in assemblies, so it does not serve this specific purpose.