OctaneRender® for Blender

The Output AOV Group node is used to collect multiple Output AOV nodes and other composite nodes together into a compositing tree and is plugged into the Output AOV Group socket on a Output AOV Group Output node (figure 1).The Output AOV Group node has two parameters, an Add AOV Output and Remove AOV Output button for adding or removing Input sockets. 

Figure 1: Multiple Output AOV nodes connected to an Output AOV Group node

Each Input socket has a Name parameter that can be used to view that Output AOV node tree in the Preview viewport. The Output AOV name can be selected in the Render AOV Output node for viewing in the Preview viewport (figure 2).

Figure 2: Output AOV Group Inputs viewed in the Preview Viewport from the Render AOV Output node