An auxiliary bus is organized within the Master-Mixer hierarchy in the same way as a standard audio bus. Each auxiliary bus can manage up to four effects which can be enabled or disabled programmatically or with game parameters. Auxiliary busses can also be positioned within the Master-Mixer hierarchy as children of other audio or auxiliary busses, allowing for more than four effects in a series.
The process begins by adding an auxiliary bus to the Master-Mixer hierarchy by selecting an existing audio or auxiliary bus and then clicking the auxiliary bus icon in the Project Explorer toolbar. A new auxiliary bus is created as a child of the selected audio or auxiliary bus.
Each auxiliary bus includes metering and allows you to set volume, add effects, RTPC, as well as apply changes based on state.