You cannot delete a callback which is in an Active Attached To Job or Waiting For Job state. However, if you do not want to attempt a callback which is in an Active Attached To Job or Waiting For Job state, you can terminate the callback.
After you terminate a callback, its status changes to Manually Cancelled. You can then delete the callback.
Procedure
In the navigation pane, click Proactive Outreach > Manager.
On the Campaigns menu, click Callback Manager.
On the Callback Manager page, select one or more callbacks that you want to terminate and click Terminate.
