How to enter such data?

[Silver]

Teacher of Physics and Teacher of science are the same sections should be taught at the same time, today Baltvoij half regiment studying science and the other half studying physics.
How to enter such data?

[Liviu Lalescu]

From what I understand: students S, teachers T1 and T2. Half of students have activity with T1 and in the same time the other half of students have activity with T2.

User can split students S into S1 and S2 (so the group S contains subgroups S1 and S2). Then add A1 (S1, T1) and A2 (S2, T2) and activities same starting time, A1 & A2.

Or, user may use S together: add activity A (S, T1, T2). If there must be allocated 2 rooms for A, then add a dummy activity Ad (no teachers, no students) and same starting time for A and Ad, and preferred rooms for A and Ad correspondingly.

[Silver]

many thanks

best regards

[Chafik Graiguer]

User can split students S into S1 and S2 (so the group S contains subgroups S1 and S2). Then add A1 (S1, T1) and A2 (S2, T2) and activities same starting time, A1 & A2.

Or, user may use S together: add activity A (S, T1, T2). If there must be allocated 2 rooms for A, then add a dummy activity Ad (no teachers, no students) and same starting time for A and Ad, and preferred rooms for A and Ad correspondingly.

I would prefer first option. it is less complicated
The situation is
a group 2Bio is divided into two subgroups: 2Bio1 and 2Bio2
suppose the activity is scheduled at morning
so, from 08H00 to 10H00 first subgroup 2Bio1 with teacher T1 in a room R1
in the same time second subgroup 2Bio2 with teacher T2 in an another room R2
from 10H00 to 12H00 the opposite is taking place:
2Bio1 with T2 in room R2
2Bio2 with T1 in room R1

What do you think
do I need any additional constraint ?

[Liviu Lalescu]

I don't understand, what additional constraint?

Yes, you need to add 2 constraints activities same starting time.

Please try a bit with FET the situation and see if you can manage to solve your problem.

[Chafik Graiguer]

Please try a bit with FET the situation and see if you can manage to solve your problem.

Ok
Now I am inputing activities data...
If this customised version produce a worhing timetable, It will be called FET-Morrocan version    

[Liviu Lalescu]

It should work. I hope it works :-)