Uncheck the box 'Show the number of 'Standbys' in order to be able to schedule standbys. Now you have three options to schedule standbys. The first two options need a look into the teacher timetable.
1.Just enter a teacher in a field with a question mark.
2.Now let the standbys be scheduled automatically.
Click on a field and open the suggestion window. Here you see which teacher is suitable for the respective standby.
The third alternative the teacher suggestion shows additional information which you can hide or show by right-clicking into the heading:
•Period flag: This flag shows to you how much time lies between the standby which needs to be scheduled from the next period the teacher hast to teach, similar to the substitution suggestion.
•Number of standbys: This is the number of standbys which have already been scheduled with the respective teacher.
•Maximum standbys: The maximum number of standbys the teacher may have according to his or her master data.
•Points: This column is an indicator in how far the teacher is suitable for this standby in general.
•Time requests: Shows to you if there is a time request of this teacher at this point of time.