The track sends can be either pre fader or post fader, choose which with the button on the send. Depending on how you set this up, the amount of data going to the reverb bus and the amount of reverb are adjusted using the track fader, the send volume, the bus gain input, the bus volume. If you want only a distant reverb sound, use the send pre, mute the track. If you want a mix use the send post and play around with all the above till you like the blend.