Web:
Click Settings in bottom left corner
Select Features
Hover mouse/cursor over Feature and, if editable, Edit Labels will appear
In Customize Feature Labels window, enter Custom Labels
When finished, click Save Changes in bottom right of window
Web:
Click Settings in bottom left corner
Select Features
Hover mouse/cursor over Feature and, if editable, Edit Labels will appear
In Customize Feature Labels window, enter Custom Labels
When finished, click Save Changes in bottom right of window