What is the initial step to set up a project for collaboration in Revit?

Enabling Worksharing in the project settings is crucial for setting up a Revit project for collaboration because it allows multiple users to work on the same project simultaneously. When Worksharing is activated, the project file is divided into worksets, which means team members can check out specific elements to work on. This provides a way for users to manage resources and track changes efficiently, ensuring that collaboration does not lead to conflicts or data loss.

In contrast, creating a detailed project schedule is an important task for project management but does not facilitate collaboration directly. Importing external data may be necessary for enhancing the project with additional context or information but is also not related to the fundamental setup required for collaborative work in Revit. Lastly, assigning roles to team members is essential for managing responsibilities and ensuring accountability, yet it comes after the project has been properly configured to support collaborative efforts. Enabling Worksharing is the foundational step that supports all subsequent actions in a collaborative environment.