How do I describe the number of shifts to equalize among staff?
We define the maximum and the minimum shift counts per staff as follows.
![](https://www.nurse-scheduling-software.com/images/constraint_faqs/user_31.png)
The cardinality constraints refer to the table above.
![](https://www.nurse-scheduling-software.com/images/constraint_faqs/user_32.png)
Do trial and error for changing the values of the table above.
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![](https://www.nurse-scheduling-software.com/images/constraint_faqs/user_33.png)