Don't have time for Sleeping Tonight

Today is the time for all Semester 1,2,3 to add subject for next semester..
But, why for my course can't add subject tonight.. Why have a management system like this..
That's no fair.. Others Course can easily add their subject..but, we just wait and see when our turn will come..
If you want to do like this, you must inform it before. so i can manage my time..But,until now i can't sleep because of this. If you did like that, i can't sleep.. i must wait until i can add it..I'm really disappointed with this management..=(
Please settle our problems...