Polycom SoundStructure C16 Design Manual page 92

Design Guide for the Polycom SoundStructure C16, C12, C8, and SR12
To add a new virtual channel group, enter a group name in the Group Label:
field and then click the Add Group button as shown in the following figures.
This example shows an example of creating the "Zone 1 Mics" virtual channel
group.
Once a virtual channel group has been defined, virtual channels may be added
to the virtual channel group by selecting the desired virtual channels. More
than one virtual channel may be selected by left clicking on the first channel
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