Prepare3D: running on triple monitors

[CARDIOTRON]

New to forum.
I need detailed step by step instruction on how to set up my desktop PC to run Prepare3D flight simulator on expanded view on 3 monitors for 160-180 degree viewing on NVIDIA 1080 graphics card.
I have a 4th monitor, that I will be using on a separate PC to run Flight1Tech Garmin G1000 stacked under the central monitor.

Thanks!