You can duplicate and modify a design option to streamline the process of developing multiple design options.
Suppose you are creating a series of design options, and several elements will be common to many of them. In this case, you can create a design option that contains all of the common elements, then create copies of it, and modify the individual design options to develop each design further.
To duplicate a design option
Revit creates a copy of the selected design option named Copy of <design option>.
Now you can edit the duplicate design options to modify them as desired. Changes made to a duplicate design option affect only that design option. See Edit a Design Option.