Have it so workout templates show in a column on a left-side bar with a client's calendar open on the main screen such that a trainer can see all workouts and simply drag/drop to a day on the calendar, avoiding the hassle and wait time of having to first click a day, then scroll through all workouts, select, wait til it's loaded, then repeat for other days. PLUS allow workouts to be clicked and dragged from one day to another day on the calendar, again avoiding the issue of opening windows and not being able to see the calendar.