Ability to add the effective start and end date on the components on a process work definition

Summary

Ability to add the effective start and end date on the components on a process work definition

Content

Process Work Definition does not require item structure to assign components to the operation, however business has a requirement to end date a component and add a new component with the future effectivity date. In discrete world, this is possible by changing these dates on the item structure but since process WD do not have item structure how can the user change the effectivity date of the components?