How to Enter New Tasks in the Outlook 2013 Tasks Module
(Optional) To assign a due date to the task, click the Due Date box. Enter the due date in the Due Date box.
You can enter a date in Outlook in several ways. You can type 7/4/13, the first Friday of July, or Three weeks from Friday. You can also click the scroll-down button (triangle) at the right end of the Due Date text box and choose the date you want from the drop-down calendar.