How to "define activity" for to import xmp data in pdf file
I need to import xmp metadata for pdf file through watch folder. So i created watchfolder through workbench. I set "input variables" for pdf and xmp file and also i set "output variable" for output pdf file. But i dont know which "Service" and "Operation" is used to "Define activity" in workbench. Could you please explain me the flow and process.