Shane - Thanks for the reply & sure thing..
So the image below shows the new monitor layout of my 3 PCs with current & desired behavior. In its current setup with ID, I get to PC2/Mon1 by moving up from PC1/Mon1 which is what I want. To get to PC2/Mon2, I have to move left from PC2/Mon1 which doesn't really match my physical layout. The ideal setup (pictured) would be to still be able to move up from PC1/Mon1 to PC2/Mon1, but moving right from PC1/Mon1 would directly take me to PC2/Mon2. I've played around with monitor placement in Windows as well as ID 2.1, but can't get it to work if possible.
Hope that helps explain - Thanks again!