The Time Builder button on the Support Functions section of the Basics tab of the Timetable Menu gives access to a timetable manipulation utility. Using the combo boxes you can display the lessons for a particular teacher, room or teaching group. Much more than this, however, you can drag a particular lesson to another slot on the timetable, even one already occupied by another lesson. Where there is a clash a bomb appears in the bar below the lesson. So for example if I drag the Biology lesson on Thursday lesson 2 to Wednesday lesson 3 this is what would appear in the slot.

The highlighted bomb represents the currently displayed lesson. By clicking on the other bomb I can immediately see the double-booked lesson.

Although this is not an automatic scheduling package, it makes the task of manual scheduling in SchoolBase® a great deal quicker.