The Move Labels command is used to move labels on distribution equipment, feeders, and equipment connections on the one-line diagram.
To move a label, go to
Ribbon: DM Electrical->One-Line Diagram-> 
Move Labels
Pulldown Menu: DM Electrical->One-Line Diagram->Move Labels
You will be prompted to select the label to move.
Select label to move:
You can then specify a new location for the selected label. If you selected a feeder label, type S to toggle whether the label snaps to the feeder when moving the label.