Reassigning Issue to Previous or Future Task is same in both My Tasks and Manager Worksheet, only Issues assigned to logged in User and are in STARTED status can be reassigned to Previous or Future Task.
This topic explains how to reassign Issue to Previous or Future Task in My Tasks, same steps are applicable for Manager Worksheet.
1. Open My Tasks worksheet and select an Issue whose Task is STARTED
2. Click on Re-assign to Next Task field, opens list of values dialog, select a Task (previous or future) and click on OK button on the dialog
3. Click Commit button to commit the updates into the system.