Civil 3D 2020 Dynamo for Civil 3D
Use the Autodesk Dynamo for Civil 3D commands to develop and run scripts for automating tasks and workflows in Autodesk Civil 3D.
Autodesk Dynamo for Civil 3D is a visual programming application that is available as a separate installation through the Autodesk Desktop App and from your Autodesk Account.
After you install the application, the Dynamo-related commands are available on the Manage ribbon tab in Civil 3D.
https://help.autodesk.com/view/CIV3D/...