How can an Interaction Activity be locked out from further edits once final

Not sure if this is the right forum for this. I am trying to understand if there is an easy config handle to prevent Interaction Activities created in CRM from being edited once they have been Finalized or Completed and appear in Interaction History. For Email Activity this is not an issue but for Interaction Activities, the Edit option can still be used to modify the content even after the status=final. Would very much appreciate any advice.