Estuardo

[Liviu Lalescu]

So, teacher ANA (all teachers, in fact) should not be allowed to teach from both 8:20 and 8:40. I think this can be done like I said, with many constraints activities occupy max time slots from selection.

Could you also attach your .fet file? Preferably attach a locked .fet file, and show us an example of a broken such rule in this timetable (day, hour, teacher, activities).

[Volker Dirr]

Or, like we already said 2 times, make a fet hours = 20 minutes. Use Activity tags (maybe "c" for children" and "a" for adult; hide that tags later if you release the final table) and mark all activities. Set activities preferred time slots for this activity tags. In that case you don't need occupy max times slots.

i guess the max occupy time slots variant might generate a bit faster. But i am sure using the max occupy time slots constraint will more critical, because:
- doing a mistake while entering the data is no as eye-catching as in the other variant. so you might not see mistakes until it is too late.
- you always need to modify the max occupy time slots constraints if you do smaller changes in the activity planning.

[Volker Dirr]

oh... i just see a much easier variant:
why do you enter the break at all?
If you don't highly need them just call the hours "1", "2", "3,", ..."7". If i see it correct the teacher will NEVER overlap if you do it that way!
the times of "3" adult will be still "different" from "3" children! Just the names are the same.
That will be the easiest variant, less critical in doing mistakes and fasted generating.

if you need the breaks just because "it looks nicer": modify it after generating.
if you need that breaks only to do the supervision planing: think about adding them later, after generating, you can still do your supervision planning then.

if you still "need" that breaks: I still recommend using 20 minutes as fet hours (and enter both of course in ONE fet dataset.).

[Estuardo]

Eureka ..
Thank you very much Volker Dirr, excellent suggestion to remove the recess, this avoids using conditions and then I can export my schedule to PDF and edit it to add recesses.
I will prove it and tell you as soon as I achieve it.
Again, Many thanks to Volker Dirr and Liviu Lalescu for their patience and great ideas.