Managing different start hours

[giusai]

Hi All,
I have 15 classes with timing 8-13 and 7 classes with timing 8.30-14.30; first group have lessons starting at 8, 9, 10, 11, 12, the other group at 8.30, 9.30, 10.30 and so on..
Teachers are shared between all.
I looked for a way but without success...
Now I'm just trying to consider 1 hour as 2 half hours and forcing to be consecutives, but I fear this will not work well and a lot of constraints will be broken...
Please suggest me something other better idea...
Many thanks
Giusi

[Liviu Lalescu]

Hello, Giusi,

Very simple: consider a real-life hour = 2 FET hours. Add FET "hours": 8, 8:30, 9, 9:30, etc. (14 FET "hours" per day). Each activity will have duration 2. Add constraints activities preferred starting times constraints for the students sets (or add a tag for each activity: 0 or 30, and add two constraints activities preferred starting times for each of the two tags).

Please let me know.

[giusai]

Many thanks... 
This is my actual attempt!!

[Liviu Lalescu]

It should work very well. Not consecutive, but rather the duration of each (sub)activity = 2.

Please let me know.

[giusai]

It works!
Many thanks

[Liviu Lalescu]

You are welcome!

Do you have a final timetable, or just a try on a partial one? Would you like to send me your file, so I can have a look? (private, if necessary.)

[crow]

7 DSeptember 2020

Hallo giusai

I saw your post to Liviu.
Is it possible to look at your file too?

I am especially interested in the different starting time of a timetable.

That is if your timetable is not private.

Thanks

Crow