This week I have not been able to work out as my watch-coach had planned. I still wanted to do the scheduled activitites for the week, only on another day, but I found that I couldn't reschedule missed activities, only the upcoming ones. I found a hack in a forum where you can pause the whole challenge and then start it again, which would enable you to reschedule past activities but I do not want to jeopardize my activity plan by pausing every time I do the work on another day than scheduled.
Do you have any other ways of rescheduling missed activities, or could you develop this in the app/watch?