Show or Hide Label Leaders

To show or hide room label leaders, go to
Ribbon: DM Electrical→Buildings and Rooms→  Show or Hide Label Leaders
Pulldown Menu: DM Electrical→Building Definition→Show or Hide Label Leaders

You will be prompted to select one or more room outlines or room labels for which the leaders will be shown or hidden.

Select objects:

Label leaders that were hidden will be displayed. Label leaders that were displayed will be hidden.