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  What constraints count when placing courses?

All constraints count when placing courses.

Constraints related to the subjects:

• the subject incompatibilities that prevent having the same subject several times on the same day
• the sequencing constraints to have courses in a certain subject before courses in another subject
• hourly maximums to limit the number of hours of a subject per day or week.

Constraints related to the teachers:

• the unavailability which indicate the days or time slots in which the teacher should not have classes
• the hourly maximums to limit the number of hours of course or presence per day, week, year.

Constraints related to the classes:

• the unavailability that indicate the days or time slots in which the class should not have a course
• the hourly maximums to limit the number of hours of course per day or week.

Constraints related to the rooms, sites, etc.:

• the unavailability which indicate the days or time slots in which the room should not be occupied
• the site constraints with commuting times to comply with and/or a maximum number of site changes per day
• rooms groups to ensure, for example, that four courses requiring a language lab cannot be placed in the same slot if you only have three language labs

Constraints related to the functioning of the institution:

• a lunch break on a defined time slot
• the inter-classes to be observed
• the breaks that courses should not overlap