You can establish and monitor relationships between elements in the current model and a linked model without copying the elements to the current model.
When a monitored element changes, a warning message displays.
You establish relationships between pairs of corresponding elements. For example, select a grid line in the current model, and then select a grid line in the linked model to form a relationship between them. You cannot monitor unlike pairs, such as a grid line and a level. If you select an opening in a wall or floor, you can monitor other openings or inserts.
To monitor elements in a linked model without copying
This setting ensures that the view displays elements for all disciplines (architectural, structural, mechanical, and electrical).
The monitor icon displays next to the element to indicate that it has a relationship with another element.
An architectural column and a structural column (plan view) with a monitoring relationship
If you modify one of the elements in a pair, a warning indicates that a monitored element has changed. These warnings also display in a coordination review.