Changing the name of a stereo pair
Tap the “Rooms” tab.
Tap the Pencil 
icon to enter Edit mode.
icon to enter Edit mode.Tap a Stereo Pair (a room which contains two matching HEOS speakers) to edit the group.
Tap “Name”.
Select or enter a new name for your pair of speakers.
Tap the Save 
button to save your changes.
button to save your changes.