In all 3 cases you have to:
For workflows, use WorkflowManager and its methods getWorkflowClone(name) and updateWorkflowNameAndDescription(username, workflow, newName, newDescription).
For Field Configurations it's a bit confusing, because internally they are called "FieldLayout" (take a look at the URL when manually editing a Field Configuration :D). Use FieldLayoutManager#getEditableFieldLayout(id) to get the FieldLayout, then FieldLayout#setName(newName), then FieldLayoutManager#storeEditableFieldLayout(myFieldLayout).
For Screen Schemes, use FieldScreenSchemeManager#getFieldScreenScheme(id), then FieldScreenScheme#setName(newName), then FieldScreenScheme.save().
Use com.atlassian.jira.component.ComponentAccessor to get the Managers, as I showed in your previous question.
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs