To reschedule a Call, you can click the 'Reschedule' button under the Actions tab on the Detail View of a Call which has been defined as Outbound and Planned.

When you click on the Reschedule button, a popup or dialogue box will appear that allows you to specify the new date and time for the rescheduled call.

In addition, you have the option to choose a reason from the drop-down list for why the call was incomplete or unsuccessful. Once you have specified all the necessary details, simply click on the "Save" button to save the call.