I am using the start/end date to track the progress of a task. However, even when I mark a task as "Launched", which means it's been completed but is awaiting client review, the system thinks the task is Overdue. I don't want to remove the dates as the calendar is helpful to track when things are going to happen.

Right now I'm ignoring the Overdue notification but I would like the ability to mark certain statuses as "Completed" for the purpose of the due dates, instead of just Closed, for when we are using the non-simple Status setup.