The department chair looks at past course evaluations and realizes that if she wants to attract students to the Operations and Supply Chain major, it would be best if Geoff were never assigned to teach that class

How can her standard model be modified to ensure that Geoff cannot scare away students from the major?
What will be an ideal response?

Answer: Using the scheme Professor:Subject for decision variables, e.g. SI is Saba teaches Intro to Ops, these additions should be made to the base model.
SI + TI + DI ≥ 6
GI = 0
The difference between this model and the base is that this assigns Geoff to no sections of Introduction to Operations, while maintaining he number of sections at six or greater among the other three faculty members. This model's objective is still to minimize the number of prep hours. As luck would have it, this model performs as well as the base model, which didn't have any sections of Intro assigned to Geoff.