With Shared Parameter Manager you can generate a new Shared Parameter text file (.txt) and the Shared Parameters contained within that file in order to be referenced and used by Revit.
To create a New Shared parameter File click the Define button from the Settings tab of the ribbon to launch the Manage Shared Parameter Files dialog box and then click the Add button and define the network location where the resulting .txt file is to be saved.
New: click to enter a file name and location to generate the new .txt file for Shared Parameters
Add: click to browse for another existing Shared Parameter .txt file to be Added to Shared Parameter Manager SQL database
Delete: click to delete the selected Shared Parameter file from the SQL database
Set Current: click to set the selected Shared Parameter File as the Default file to be used by your Revit Application in the background.