For all overlapping lessons enter such relations:

If teacher has 1-st lesson in classes 2, 8, 10, then teacher can not have 1-st lesson for classes 1, 4, 5, 7, 9 and 11.

Same relation for lessons (periods) 2, 3, 4 and so on, until period 8.

Note: You can simply copy entered relation (selected classes will remain) and then just change periods.

Enter relations for other overlapping lessons.

If classes 4, 7, 11 have 1-st lesson, teachers can not have 1-st lesson for classes 1, 3, 5, 6 and 9.

Same relation for lessons (periods) 2, 3, 4 and so on up to 8.

Enter relations for other overlapping lessons, in this case for periods 1 and 2, 2 and 3 and so on.

If classes 1, 3, 5, 6 and 9 have 1-st lesson, then 2, 4, 7, 8 and 11 can not have 2-nd lesson:

Enter the same relation for remaining lessons (periods): 2 and 3, 3 and 4 and so on.

Note: You can simply copy relation (selected classes will remain) and just change periods.

In Print Preview set to print bell times that are different compared to Bell 1:

Timetable will look like:

Check if there are no overlapping bell times for the teachers – this can happen if program relaxed some relations during timetable generation.

Such checking can be done selecting menu Timetable, Verification. Program may show such information as below: in this case 6-th lesson for class 6a ends later than lesson for 7d starts:

If all relations are met during generation, this will not happen.

Note: there may be no breaks between some lessons for teachers, e.g. one lesson 8:45 – 9:30, next – 9:30 – 10:15 (it is allowed according to relations entered above).