Operate As Primary property

Use this property to designate a collection other than the primary collection to be associated with unbound or variable-bound components that are typically associated with the form's primary collection. This would typically be set to True only for secondary collections or subcollections.

For instance, variable-bound components are reinitialized when the user inserts a new row into the primary collection. This property allows you to designate another collection, perhaps a secondary collection, to be associated with these components.