This chapter provides an overview of the PCR rule set structure and details how a customer can create a PCR rule set. PCR rule sets are used to calculate a result for the priority, complexity, and risk rating for a case scenario. Each of the components which make up a PCR assessment is represented as an attribute in the PCR rule set. A rule can have an associated weighting which is added to the overall PCR calculation if it succeeds. The rules then determine the overall rating and classification of the case.