Thank you! The first option has solved my problem, now I have another question, can I do for a teacher to not have two consecutive hours with the same group?
I do not want to do:
Hour 1 - Mathematics - Third Grade - Teacher John
Hour 2 - Physics - Third Grade- Teacher John
Hour 3 - Chemistry - Third Grade - Teacher John
Hour 4 - Statistics - Fifth Grade - Teacher John
I want to do:
Hour 1 - Mathematics - Third Grade - Teacher John
Hour 2 - Statistics - Fifth Grade - Teacher John
Hour 3 - Chemistry - Third Grade- Teacher John
Hour 4 - Physics - Third Grade- Teacher John
I do not want to do:
Hour 1 - Mathematics - Third Grade - Teacher John
Hour 2 - Physics - Third Grade- Teacher John
Hour 3 - Chemistry - Third Grade - Teacher John
Hour 4 - Statistics - Fifth Grade - Teacher John
I want to do:
Hour 1 - Mathematics - Third Grade - Teacher John
Hour 2 - Statistics - Fifth Grade - Teacher John
Hour 3 - Chemistry - Third Grade- Teacher John
Hour 4 - Physics - Third Grade- Teacher John