At this time, LifterLMS — the learning management plugin that powers our site — does not have the ability to unmark lessons as complete.
I've requested this feature, and the LifterLMS has assured me they'll add this in a future release. But for now, we do not have that ability.
May I ask why you would like to unmark lessons as complete?
BTW, you CAN re-watch video lessons you’ve already completed. But at this time, you can’t RESET your progress. Once something is marked as complete it can’t be marked as “INCOMPLETE”, but it CAN be reviewed and watched an unlimited number of times.
Hi Shawn, unlikely to be needed often but I did accidently mark one as completed before I completed it. Cheers, Mark.