What must be created before a design option can be created?

Before a design option can be created in Revit, a design option set must be established. A design option set serves as a container for one or more design options, allowing users to explore various alternatives within the same project. By creating a design option set first, it enables you to have a structured approach to managing multiple design variations effectively.

The design option set provides the necessary framework for the options that represent different ideas or scenarios for the project. Once the set is in place, you can then create specific design options that reside within that set. This is vital for evaluating different designs while maintaining the integrity of the overall project model.

Having a central model is valuable for collaboration, but it does not directly relate to establishing a design option. Similarly, while phases help manage the different stages of a project, they are not directly related to design options. Model groups are used for creating repetitive building components but do not facilitate the design option functionality. Therefore, the creation of a design option set is a crucial prerequisite for working with design options in Revit.