If the workflow allows, you can reassign a task that has been assigned to you. You can delegate the task to another user, giving that user the responsibility to complete the task.
To reassign a task:
Open the task. (You can open a task by clicking it in your Inbox.)
Click Delegate.
If you are prompted to specify the user to whom to delegate the task, do the following:
On the task’s line item, click click to assign.
In the selection page, select the user to whom to delegate. For instructions on using the selection page, refer to Finding an item on a selection page.
Click OK.