With Untis you can enter individual time requests for each day of the week and every period of the day, for each element (i.e. teachers, classes, rooms, subjects) and for each lesson. Request weighting ranges from "-3" (do not schedule lessons here under any circumstances) to "+3" (schedule a lesson here if at all possible). You can enter time requests for classes by clicking on the <Time requests> icon (
) in the toolbar of the master data window.
Core times
If you want Untis to begin scheduling periods in the first period of the morning , enter a time request of +3 in the periods when lessons should take place at all costs. This was done for the 1st to the 4th period in this example. This is called the core time. The optimisation algorithm treats violations of the core times as very serious infringements.

Balanced time requests
You can use the time requests "+2" to "-2" for lessons which may be scheduled any time but for which you wish to set preferences The time request for class 1b can be explained as follows:
Lessons must take place between the 1st and 4th periods at all costs. Lessons should be held in the 5th and 6th periods but preferably not in 7th period. There should be no lesson in the 8th period and there must be no lessons scheduled in the 9th and 10th periods. You can adjust to what degree the time requests (+3 to -2) will be taken into account during timetable optimisation (please refer to chapter Weighting ).

Note: Time request -3
A time request of -3 is equal to an absolute block and therefore does not require weighting.