Hi, Grant. A recurring task must have a due date and a start date but that doesn't have to get in your way.
One way of thinking about these dates is they show when you actually plan to work on the task. But another way of thinking about it is that the dates show when the task could possibly be done. In this approach, start date is the earliest date on which the task could be done, and the due date is the date after which the task can no longer be done.
So, consider setting up your task so that each time it reoccurs, the start date will be the current date and the due date is about 20 years in the future. You could do this by setting up a weekly reocurrence pattern where the task reoccure 1040 weeks after it is completed with lead time locked and set to 2040 weeks. Then, whenever you complete the task it will be reset to say that you cannot have your next execution of this task any earlier than today and you can do it anytime in the next 20 years.
-Dwight
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