Hello Mr Liviu I wish you are Ok
I liked the customised version you made for me it is great
I only read the topic Aktivitätenplanungsdialog / Tausche Lehrer - Tausche von Klasse/Aktiväten
I think it is a great development if it is made to my customised version because I have 3 teachers swap classes each year
one teacher teaches 3 months a class while the two others teach other two classes the the next 3 months they swap and so on
i will give you my private data so that you understand more
As discussed with Mr. bachiri401 on Facebook chat, I hope using optional subjects and students overlapping groups will help. Use the option of automatic division of students years.
I think there are two entries in the FAQ about optional subjects/students divisions. Please read them and we can continue the discussion here.