need help with input

[Volker Dirr]

Oh... Sorry. Of course "Min". I fixed my initial post.

[MrcHERI]

i managed to do all that so far, except one thing
and still need more help in it
that would be "Very important advice about the constraint min days between activities: probably you will need to add min days = 1 for all constraints" in MA mode
i don't know how to set it up
Firstly, am i in the right tab?

if yes, i don't know how to set this up

the objective is to make every subject won't be taught more than once a day
(what i mean by that by more than once: Math then Sci then Math again)

if i add all of them, i get an error

[Volker Dirr]

What do you mean with "I get an error"? What error?

You can see on the left side of your attached picture, that all activities already got a min day constraint.
If you want to modify them all at once, then click in the previous dialog on "Modify multiple constraints at once".

But i think it is more important that you go to FET -> Data -> Teachers and read the "Help" there, since you can choose different rules there for the teacher.

[MrcHERI]

Sorry for confusing you, what i mean is that i dont know how to set min number between same subject for same student (i dont want them to get 2 spared ours of same subject in same day)
this : time constraints > activities> others 1 > min day between activities
is too complicated, and i can't find a tutorial about it

[Volker Dirr]

The constraint is already added automatically if you add an activity. If you add an activity, then you must of course add only ONE activity and use the "split" value there. Don't add TWO activities with the same subject for the same students group.
I can see that the constraints in the picture are already added. But by default they are added with weight 95% only. I guess you want 100% weight. Select the "modify multiple activities at once". Select old weight value "95" and select new value "100" and press "modify".

[MrcHERI]

thank you for the weght tip but you dont understand, i dont even know how to set it at ALL

to clarify my question how i set the min days between activits?
how do i use this option? BEACUSE  clicking "ALL" just gave me an error while generating.

[Liviu Lalescu]

Hello,

I don't know how or when they disappeared. To add them, visit Advanced > Spread the activities over the week (you can find this in two places: in the menu, or in the Time tab).

You might want to post your file.

Please let us know (but now I might go to sleep).

[MrcHERI]

i will try to use the split in activity tab instead
thank you for everything and have a good night

[Liviu Lalescu]

Sorry, but do you want to add again all your activities? Or with a simple click solve the problem?

Thank you! Good night! (I'll stay a few more minutes.)

[MrcHERI]

i did set up my activities and set the mod in FET to MA
the problem i don't want the student to have same activity twice a day (in evening and morning) in same real day

i didn't understand how to set the minimum day between each activity

[Liviu Lalescu]

When you add a split activity, FET lets you choose the min days (default 1), half (default unchecked), weight (default 95%), and consecutive (default checked). You have no such constraints, and I wonder why. You need to add these constraints with 100% min 1 days, and this is very easy as I told you (just try the Spread).

[MrcHERI]

Because im getting bad results, i will try to fix it and see what i can do

[Liviu Lalescu]

Sorry to hear that! You might want to make weight = 95% if 100% is impossible. Maybe you have 6 real days per week and you divided an activity into 7 or more subactivities.

You might want to post your file.

[MrcHERI]

this the file
https://file.garden/ZSG312Tvf253N2sM/NM%20-%20Copy.fet (i updated the file, still same issue)

as you see i still get same subject on same days even with split
again i still dont want subjects to be in both evening and morning of same day, do that work by default or do i need to change something

[Liviu Lalescu]

Please see my attached file. I applied the Spread, then tried to generate and observed that 2 constraints min days between activities are probably impossible, so I modified them (see the 4 constraints commented with "Liviu").

Now it solves easily, so you might want to add other constraints.

Unfortunately, I cannot read Arabic characters, but I think it is OK (with those 2 exceptions).