Labels are another convenient feature of the Butterfly Diagram. They can be used to provide additional information about Equipment and Cable objects, directly in the Butterfly Diagram. Labels are handled (almost) the same way in the Butterfly Diagram as they are in the Design World.
Add Label: use the Add Label option in the selected objects context menu to create a new label for the object in the Butterfly layout.
Note: This context menu is available for both Equipment and Cables from 2 places: the central Butterfly drawing and from the Equipment / Cable panels.
Move Label: Labels can be moved (by clicking and dragging) on the label to specify its new position.
Edit Label: select the label and choose Edit Label from its context menu to modify the label display properties such as field values, size, color, etc.)
Delete Label: is used to remove the selected Label from the Butterfly layout.
For more details about using Labels in IRM, click on the following link - Object Labeling.