You can specify which subcriteria are to exist for a main criterion and the weighting the score for a subcriterion is to have when the score for the main criterion is calculated. You can make these settings in Customizing for Purchasing under Vendor Evaluation.

For example, the subcriteria Price Level and Price History together constitute the main criterion Price – i.e. the score for the main criterion Price is derived from the scores for the two subcriteria.