Q: What does 'Optimizing' mean in timetabling?

A: In timetable construction, when your file has reached 100% it means that all of your lessons have been scheduled. The solver will however continue to attempt to improve the configuration of the lessons. The message above the progress bar will read 'Currently optimizing' while this happens. It is advised to leave this running for 30 minutes to an hour at most, unless you are happy with the initial timetable that is generated.