focusrite mix software driving me nuts

Hi,I have the correct ASIO driver selected and my VST connections are set up…I just can’t figure out this routing thing for zero latency with some reverb and getting the signal to a Cubase track to record dry, I’ve always had probs with routing in the box because it never seems intuitive…not to me anyway and the focusrite software mix just has me up against a wall, I know I’m missing something just can’t figure out what,
at the moment I’m monitoring through Cubase using the monitor button and reverb from plugin so got a little bit of latency, would really love to be able to use the pro 24 to it’s full ability…thanks for trying to help, Kevin