Messages

Hi,
At my school, we have a double schedule.
Therefore, from 8:00 a.m. to 2:30 p.m. we have 11 time slots and when a teacher teaches in both timetables, it creates collisions a lot of collisions.
For example 
schedule 1                     schedule 2
8:00-9:00 h                    8:00-9:00 h 
9:00 -10:00 h                  9:00 -10:00 h 
10:00 -10:20 (break)           10:00-11:00 h                 collision
10:20-11:20                    11:00 - 11:30 h (break)       
11:20-12:20                    11:30-12:30 h                 collision
12:20 -12:30 (break)           12:30- 13:30h
12:30-13:30                    13:30 -14:30 h
13:30-14:40

FET assigns the same teacher hours on 10:00-11:0 and  10:20-11:20 or 11:20-12:20 and 11:30-12:30
What Can I do ?