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@Benahmed Abdelkrim

I have another idea that we might need:
Introduce a constraint for the minimum number of activities in a building from a given set of activities.
This would help ensure placing, for example, at least one activity from a specific teacher category in a building (e.g., at least one male teacher, or a teacher of a certain professional grade).
But now, however, we let Liviu focus on improving the current features.

Hi @Benahmed Abdelkrim
Attached is a sample based on a real case for generating supervision timetables for Moroccan Baccalaureate exams (national and regional). This file is specifically intended for Moroccan users and is meant to be added to the examples folder for reference and inspiration.

In its current use, the constraint is applied only to activities with a single teacher. I do not think it is necessary to extend it to activities involving two or more teachers.

This is because we focused on applying this constraint only to exam-related cases.
However, it could also be useful in more general scenarios. In the future, the constraint could be generalized to apply to a  set of activities, defined through criteria such as a specific teacher, activity tag, subject,...

After testing, the option works without any problems and the results are very nice.
Thank you for these great improvements.

Thank you very much.
No problem—as long as the objective is the same, any approach that achieves it works, whatever the method used.

Instead of adding an exception constraint to exclude building rooms from the current MTR constraint, why not introduce a new constraint at the building level? This constraint would allow assigning only one room from a given building to a teacher. In this way, we ensure that the building is allocated only once and that only one of its rooms is assigned, thereby satisfying the required condition.

This is exactly what I was trying to convey: adding a solution to this issue by  a constraint on the maximum number of occurrences of the building as a whole for a teacher. When this constraint is applied at the building level, FET will assign only one room from that building to the teacher, effectively avoiding repetitions across rooms that actually represent the same physical space.

Thank you for the efforts to simplify the work with the FET NSRT version.
Is there any hope of   "applying the max teacher by room to buildings" in order to simplify the working method with FET NSRT?

غير معقول ولا يقبلها المنطق

Can you add feature: inport fet file

استعمل تطبيقات الطبع ك edt4fet
اما طبع المنتوج هكذا فغير عملي

يمكنك اعتبار الحصة، اما ربع ساعة او نصف ساعة او ساعة
مثلا محاضرة مدتها ساعة وربع تضع في المدة 5 اذا اعنبرنا ان حصة فيت تعادل ربع ساعة

This can be achieved by assigning preferred rooms to each teacher and adding constraints for unavailable times for both room and teacher — particularly for rooms other than the one the teacher prefers to use at specific times.

You can use dummy activities assigned to the second teacher and make them simultaneous with the main teacher's activities.