1. Create a New Relationship Query
2. Under Criteria, Open Individuals and Select Relation Code.
3. Change the Operator to Equals or One of and enter the appropraite Relation Code or Codes
4. On the Output tab, Under Constituent> select Name, under Individuals> Select Name, then also under Individuals> Select Relation Code. (You can also choose to see the reciprocal, if needed)
5. This will provide you a list of the constituents, their relationship person, and the label of the Relation Code.