Allow appointment blocks to be different by center
Right now the time blocks are in 30 minute increments at the college level. Some centers want to have 30 minute appointments and some want 60 or 90 minute appointments. This means for anything longer than 30 minutes they have to choose the first half hour block. If we show that the appointment is available for the 60 minute appointment, the student may book the second half hour and miss the first half hour of the appointment.