The CRM Relationship dropdown list allows you to display the relationship between the entity defined in the CRM Form Configuration and the retrieved data. Relationships are formatted as [N:1], [1:N], [1:1], [N:N]. Many to one, one to many, one to one, and many to many respectively. For example, a CRM Sub-Grid View widget could display a list of orders for a particular customer. The relationship between these data fields would be [N:1]. A customer may have multiple orders, but an order cannot have multiple customers.