There are following copy flow transitions:
•Start
Indicates in which container you can create content, task or event, according to the copy flow available to the user. For this transition the 'from' field is meaningless and ignored, only the 'to' field is considered.
•Send on / send back
When sending a content from the container, specified under "From", the content is moved to the container, specified under "To".
When sending back, if you leave the "To" field empty, it means 'the creation container'.
Note
Container is a folder, when dealing with content, while it is a calendar when dealing with tasks and events.