You can load Shared Parameters into a model by copying and pasting an existing schedule with established Shared Parameters from another model.
Revit will automatically load and establish the same Shared Parameters as they were set up in the other model. This is great when managing multiple models and ensuring all models are using the same Shared Parameters.
Establish a blank Revit model, or Revit Template, as the Master for Shared Coordinates.
In the Master model, create Shared Parameters in the project either one-by-one through the typical manual method, or using a Dynamo script.
Create a schedule and add all your Shared Parameters into the schedule.
Copy the schedule by selecting it and then pressing Ctrl+C on the keyboard or on the Modify tab click the copy button.
In the same Revit session, open another Revit model where you would like to add the Shared Parameters and either press Ctrl+V on the keyboard to paste, or on the Modify tab click Paste From Clipboard. You can do this from any view.
The new schedule will be copied into the Revit model along with the Shared Parameters automatically created. Note that only the Shared Parameters added to the schedule will be created. Other Shared Parameters that exist in the Master model but were not in the schedule would not be copied over.