You can specify default columns for fields types Relationship and Query Backed Relationship.

Use the Forward tab to specify the columns displayed on the forward relationship field and the Backward tab for the columns displayed on the backward relationship field. The customization of the two fields are independent of each other, but both can be specified from just one of the fields (you are not required to edit both fields).

For information on filtering data to specify fields and the common interactors on the panel, see the Windchill RV&S Help Center.