EWB: Operations Overview
What do you want to do?
Work with an
Operation
Create one
Change one
Copy one
Copy one together with the operation’s subordinate objects
Copy one together with the material components that are assigned to the operation 
Delete oneWork with a sub-operation
Create one
Change one
Copy one
Delete oneWork with a reference operation set or reference rate routing
create a reference 
create a reference as a
work center operation setWork with several operations and sub-operations
Change several operations or sub-operations at the same time (mass change)
Examples
Copying including subordinate objects
Copying including material components
Use of a work center operation set
Cumulating standard values