suggestion

[youcef39]

In Algeria, we work in 4 classes in the morning and 4 classes in the evening
*After the second lesson, whether in the morning or evening, students take a break
* Here in Algeria, we prefer that there be a restriction that keeps students in one classroom during classes from the beginning of the first session to the end of the second session.
Whether in the morning or evening
That is, in this area of classes, students do not change the hall
However, the Fit program currently forces us to choose the field from the beginning of the first session to the end of the third session, and requires that the difference between the field be an amper or equal to 2, but this is not useful to us.
We want the program to allow us in this constraint to choose two fields
We use it for every constraint field
Any two constraints allow us to determine
Scope: from the beginning of the first session to the end of the second session.
And also this field
From the beginning of the third period to the end of the fourth period

[Liviu Lalescu]

Please add [1,3) and [3,end of day).

[youcef39]

Please add [1,3) and [3,end of day).

Thanks for the response and interest
When we put a restriction
Maximum daily room changes in a range of classes
The range is from the beginning of the first session to the end of the third session
This ensures that the hall does not change during the first, second, and third period
If we add a restriction with it
Maximum daily room changes in a range of classes
The range is from the beginning of the third period to the end of the fourth period
This means that the department does not change the hall from the beginning of the first period to the end of the fourth period
This is excellent, but it is not always available and we do not require it
conditional for us
Do not change the hall during the first and second periods
Do not change the hall during the third and fourth periods
There is no harm in (the first + second period) being in a different hall than the hall in (the third + fourth period).

[Liviu Lalescu]

Please add as I suggested, 1,3, it is like you need. 3 is not included.

[Liviu Lalescu]

If the interval is a,b, it is considered like in mathematics: [a, b), meaning that a is included and b not included. Please try on a small example to check that it will allow room in b to be different than the room in a or a+1.

[youcef39]

If the interval is a,b, it is considered like in mathematics: [a, b), meaning that a is included and b not included. Please try on a small example to check that it will allow room in b to be different than the room in a or a+1.

excellent
That will do the trick after experimenting
Using both restrictions together
Thank you very much for the quick communication and response

[Liviu Lalescu]

You are welcome!