The '
Device → I/O Routing'
page appears for all apps that handle audio inputs and audio outputs. It provides the ability to route audio channels being received by the app's receivers to the audio channels transmitted by the app's senders.
By default, the channels are mapped on a 1:1 basis. The I/O routing can be edited if you wish to change the default assignments.
This page works in the same way as for other app types, and is described in HOME Apps - I/O Routing.