Insert Effects in Multichannel Configurations (Cubase Pro only)
You can insert VST 2 and VST 3 effects on tracks with a multichannel configuration. However, not all effect plug-ins support multichannel processing.
Mono or stereo effects can only process 1 or 2 channels, whereas surround-capable plug-ins are applied to all speaker channels, or to a subset of these.
To set up to what speaker channels the insert effect is applied, use the Routing Editor.