Surround : Multichannel Tracks and Signal Routing

Multichannel Tracks and Signal Routing
For more information, see the following topics:
Surround sessions typically include a combination of mono, stereo, and multichannel audio, Auxiliary Input, Master Fader, and Instrument tracks, and inserts and busses.
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Multichannel surround mixing is supported with Pro Tools HD or Pro Tools with Complete Production Toolkit only.
Once the appropriate I/O Setup has been imported or configured, audio, Auxiliary Input, Master Fader, and Instrument tracks can be mixed in multichannel for surround using Pro Tools mixing features.
Multichannel I/O and signal routing is determined by the paths defined in the I/O Setup dialog.