Dang..this is taking me back to 2009 when I was trying to set up a multi screen display to show major design students work for a public display - cluster display showing one image across several screens like one big picture.
The IT guys couldn't do it.
I first saw multi-screen activity achieved with an IBM PC using a dual display set-up during the mid 80s on UK TV - when - for a short time, we had scheduling dedicated to computing and IT literacy. A programmer demonstrated his animated graphics routine which made a bird fly in colour from left to right from one monitor to the other.
If I track down the footage, I'll share it for the historical value.
I should have told them to get macs..lol.
From my experience, even in possession of Macs, they probably still wouldn't have been able to fathom how to make it work. The IT support dept. at a highly reputed STEM university were unable to help me with configuring their email system to work with Mail and Snow Leopard on my A1181. Eventually, I devised a solution and subsequently sent the instructions to them so that they'd know what to do if they were contacted by anyone else in my situation.
Wasn't impressed at all. They were being paid to help me and I had to help them.