Adcom luna Owner's Manual page 26

c. Device list will appears again and the group will be
shown with group name and the devices in the
group. Tap on group name to select the group.
d. All clients in the group will synchronously play the
program which the master device is playing. You
can drag the volume control bar to change the
master volume for all grouped devices. You also
can tap on the volume control and then change
volume for each device respectively.
Note: master device is which you selected
from device list for editing group; client is the
device you selected sharing with on 'Group
Setup' screen.
Note: Aux in and Bluetooth modes are
incompatible multi-room playback. Switch to
it will remove the master radio from the
group.
e. You may need to dissolve the group if you don't
want to group play your speakers, tap 'Delete
group' to delete the group on 'Group Setup' screen.
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