I'm an ex Sonar guy . I purchased Studio One the day that Sonar development was stopped.

I'm attempting to use a reverb plugin while tracking.
I insert a plugin into a track armed to record

It's heard through the cue mix to headphones but I can't hear it in the control room through my monitors.

So the vocalist that I'm tracking says " it sounds like I'm singing in a cave"
I can't hear any reverb at all in the control room at all.

How do I monitor plugins through both the mains and the cue mixes?

Thanks in advance
Joe