Messages

Thanks a lot Liviu, it works. I created another activity for the same subject, no students no teacher. After that I used the function
you suggested (A set of activities has the same starting time) then I assigned the rooms to the activities. I worked step by step, generating timetables even if all the job was not completed to identify potential problems and got finally a solution.
Your program is amazing. 
The last case I mentioned in fact doesn't need any adjustment, it can easily be solved because there are two distinct activities.

Thanks again.

Bernard (Thailand).
I tried to make a small donation (out of my pocket, the school won't pay and here we do not earn European salaries...)
but those in charge at Paypal  don't let you edit your credit card number during the process  , so I have to fix this before...)

Thanks Liviu for your answer.

I must miss something, how can I tell FET that A2 must have the same starting time as A1.
Is it by using 'two activities are grouped' or 'A set of activities has the same starting time' ? Anyway, I'll try both.

Thanks again.
(Another situation where we could need this, or another way to explain the problem: Assume you have two streams Arts and Science. Your students, both streams, are in the same classroom (homeroom) and there are core subjects for both streams. There are also specific subjects and students must move to another room. At the same time S1 splits into S1Arts and S1Science. Let's say S1science remain in the initial room and S1arts have to move to another room, which is not assigned in advance, but part of a set of rooms. Let's S1 be a Grade 10 set, at the same time, a similar situation can happen with S2 which could be a Grade 11 set. They all want to access the same group of rooms. I'd like FET to assign a room avoiding conflicts with other students sets.)

In that case how will FET be able to calculate a timetable?
Starting time day+hour is what I am looking for. To get a timetable, I give the students' set, the subject, the teacher(s) and now the room(s) as parameters and FET finds out the day+time.
I mentioned English and the proficiency level groups, but a similar situation appears with elective subjects.
E.g. Arts students can chose between French and Chinese. So, at the same time, the same students' set will be in two different rooms, with two different teachers...
In the past, I had many rooms at disposal, so I did not need to find an optimal occupation. It was easy then.

I have a similar problem (maybe the same, it's not very clear). Students are divided in two streams, Arts and Science. Let's take Grade 10 as an example. For English classes, they are divided according to their proficiency in English, say low and high (could also be low, middle, high). For English all Grade 10 students are divided into two groups, so I need two teachers and two classrooms. FET allows you to assign two teachers to the same activity and solve the problem nicely, but does not allow you to assign two rooms to one activity...
If you use set of rooms, you can assign two rooms, but there are conflicts with other activities using that room at the same time...
How can this be solved?
Thank you