Surround : Pro Tools Setup for Surround : Configuring Pro Tools for Multichannel Sessions : Reassigning Channels

Reassigning Channels
The I/O Setup dialog and its Channel Grid also let you reassign channels. This is especially useful for routing channels within a multichannel path, without having to repatch your audio interfaces.
You can reassign paths to any required configuration, limited only by your systems resources, and the I/O Setup dialog requirements for channel overlapping and naming (see Valid Paths and Requirements for more information).