If a teacher cannot hold his regular lesson then you can regulate if and how this cancelled lesson shall be counted with the reasons of absence.
Example: Reason of absence and substitution counter
| 1. | Open the file demo5.gpn and the reasons of absence window (Master Data | Reasons of Absence). |
The reason of absence "OF- Official" is not ticked in the column "Count canc.". So a cancelled period with this reason of absence is not counted negatively for the teacher.
The reason of absence "SL - Special Leave" is ticked in the column "Count canc.". So a cancelled period with this reason of absence is counted negatively for the teacher.

| 2. | Mark Arist and Curie absent on a Monday in October: Arist with the reason of absence "Of - Official" and Curie with "SL - Special Leave". |

| 3. | Open the substitution statement for the day of the absences via "Reports | Selection | Substitute Scheduling | Substitution Statement". |

Teacher Aristoteles has four cancellations on this Monday. However, these cancellations are not counted negatively as his reason of absence is "Official". The substitution statement displays the cancellations but it does not count then. Aristoteles' sum (Total)is zero, uncounted cancellations: 4.

Madame Curie was on special leave. With this reason of absence cancellations are counted. Accordingly the four cancellations on this Monday shall be counted negatively. Her total is -4.

| 4. | Now mark Cer absent on Friday of the same week and open the substitution suggestion |
Curie's total shows -4 because of Monday's cancellations. Arist's total shows 0 as his cancellations were not counted negatively.
