Some time ago I was trying to set up my models in Visualizer and was having problems getting the result I desired. I found out that I couldn't because some of my models are non-standard. As an example, I have a Tree Model with 16 strings of 200 nodes each. The issue is that I ran into is when I move that model over to a port in the Visualizer and it auto maps across 16 ports. Unfortunately for my setup, as I choose not to power inject, I have 32 ports in use (2 per string). There was no way to split that up in the visualizer, and I can't break up the model into 32 strings of 100 as it changes the layout of the tree, adding an additional 16 lines....but what I need is them stacked by sets of 2.
I hope that my explanation makes sense. What I'm revisiting this to find out, is whether this functionality has been expanded to address this scenario. It's been a couple of years since I last checked on this and in looking at the latest version I'm not sure I can find a way around my situation still.