There are three years Grade 10, 11 and 12. Those years are to be divided in Humanities and Science so I split each year into two groups. Again those groups are to be divided due to the number of students so for example :
Grade 10 -> Grade 10 Science and Humanities both divided into 1 and 2
Check (click) "afficher le sous-groupes".
Yes, thank you!! ;)
I noticed it in the meantime and felt a bit confused, did you say "stupid" ? :-[