The System Operator is the name of the user that receives messages from an instance of CTS.
To change the operator used by an instance of CTS:
Connect to the repository where the CTS instance is located.
Click the Administration > Content Transformation Services node.
Click the CTS Instances node or link.
Select the CTS instance that you want to configure from the list of available instances.
Click Tools > Content Transformation Services > Configure > Service.
In the Configure CTS instance screen, select a user name from the Operator drop down.
Click OK.