The ranges for the PCR ratings must be mapped in order for the PCR ruleset to determine the PCR ratings for the application case. The administrator must set a numeric range for each rating. For example the High Priority range may be defined as 70-100, the Medium Priority range may be defined as 30-69 and the Low Priority range may be defined as 0-29. The ruleset then uses these values to determine whether the application case is High, Medium or Low Priority. Range mappings must also be defined for the Complexity and Risk ratings.