Mark the days on the calendar where workout is scheduled with and orange Dot. Change that dot to Green when the workout is completed. If the workout is missed change the dot for that day's workout to red. This marking of the calendar with dots to show where workouts exist will help trainers visually look through the calendar and make sure that there is a workout on that given day. An advanced feature would be to take the first character of the workout preferably a number as I have with mine so workouts one through six and it would show those as a orange number, a green number when completed, and a red number if missed. But I would be happy with just the dot being orange green or red