How do I reschedule a workout?

I still can not figure out how to reschedule a workout on my calendar.

I am clicking on the day in my calenday and then selecting "View Entire Day". My only options are "Play Video" and "Remove". I don't see anything that says "Reschedule". I've tried on both my phone (android) and my desktop.

Are we able to reschedule single workouts that we add to our calendar? Or only if they are on there through a purchased program?