To Parent, Reparent, or Orphan an Object
When you associate an object on the design sheet with another object, you parent the object. The object is selected when the parent object is selected and will move with it if the object is moved. To disassociate the object from the parent, orphan it.
1. In an open sheet, select the object to parent, reparent, or orphan.
2. Click Diagramming > Modify > Reparent, and then click the required parent object to parent or reparent an object, or click Modify > Orphan to orphan the selected object.