Select the equipment to modify. To edit the properties of a designed equipment object for which geometry has yet to be defined, you must select the object from the system hierarchy in the Workspace Explorer.
Specify the relationship in the Relationship List box.
Change the type of relationship using the Positioning Relationship box as needed.
You can remove relationships by clicking Delete Relationship on the ribbon. This step is often necessary when moving previously constrained equipment. After a relationship is deleted, no connectivity remains between the two pieces of equipment during further design operations.