The Custom Capacity rule allows you to build your own constraints based on the sum or average of a column in your PCT.

This rule is flexible and can be used in many situations. For example, you can use this rule to keep an Optimize session within a budget. If you create a Custom Capacity rule where the sum of a CostPerOffer column in the PCT must be less than or equal to 10,000, you have defined that all the offers given out must cost less than ten thousand dollars.

You can also use this rule to limit the range of offers given out. If you create a Custom Capacity rule where the average of the APR of the offer is greater than or equal to 7, you are ensuring that you do not give out too many offers with very low APR.