For example you need to wash your car every two months but it is not possible to do that exactly after two months. So you can set a timed task and after washing your car you delete it like every other task too but the new setting creates a new task with a due date with two months in the future.
Rail
For example you need to wash your car every two months but it is not possible to do that exactly after two months. So you can set a timed task and after washing your car you delete it like every other task too but the new setting creates a new task with a due date with two months in the future.