A regenerating task in Outlook 2013 is like a recurring task, except that it recurs only when a certain amount of time passes after the last time you completed the task.
Suppose that you mow the lawn every two weeks. If it rains for a week and one mowing happens a week late, you still want to wait two weeks for the next one. If you schedule your mowings in Outlook, you can use the Regenerating Task feature to enter your lawn-mowing schedule.
Follow these steps to create a regenerating task:
Open the task by double-clicking it.
The Task form appears.
Click the Recurrence button in the Ribbon (or press Ctrl+G).
The Task Recurrence dialog box appears.
Click the Regenerate New Task option.
Enter the number of days between regenerating each task.
Click the OK button.
A banner appears in the Task form that describes the regeneration pattern you’ve set for the task.
Click the Save & Close button.
Your task appears in the list of tasks once, but it has a different type of icon than nonrecurring tasks have so that you can tell at a glance that it’s a regenerating task.