About Auxiliary Effects). You can route any number of audio segments through the Reverb Auxiliary Effect but the Reverb effect is output in stereo to 2 separate output channels, combining the effect on all input segments. You can adjust the amount of reverberation that can be applied to an individual segment using the Reverb Amount slider.
Reverb Send is a soft effect that patches an audio segment to the Reverb Auxiliary Effect. All parameters for the Reverb Auxiliary Effect are set through the Auxiliary Effects panel (seeTo apply the Reverb Send effect on a segment:
This represents the amount of reverb that will be applied to this segment.