I don't think the combination of Charging Schedule and "Scheduled Departure" and "Depart at" setting makes sense.
Charging schedule has nothing to do with my departure time.
I like to set charing times to specific locations, time window, and specific days, when my utility power is cheaper.
Monday-Friday: 8:00pm to 11:00 am
Weekends: all day
All days, all times
My typical departure time might still be 8am, but if I don't go to work during a specific week day, I still want the car to charge.
This is currently not possible in the Charging settings.