So it seems I'm in the same boat as many of you. I have two screens that currently show my pilots MFDs. My desire is that I can choose what they display, based on what seat I'm in. Considering the TEDAC only seems to export when the CPG seat is occupied, it seems like it is somehow some way possible. Considering the TEDAC export is the primary thing I want exported when I switch to the CPG, I found a <profanity>ty work around. That is to assign the TEDAC export to the same coordinates as the Pilots left MPD. Before I switch to the CPG, I switch the pilots MPD to the FCR screen. This screen is currently 99% blank, with only the text "FCR" and your cursor displayed. This way when I switch views, the TEDAC display is drawn over the pilots left (mostly blank) MPD. So it works pretty well, with the only obstructions being the cursor and FCR which I can ignore for now. This work around would actually work pretty well if there was a way to actually turn off the MPDs, like you can the TEDAC display. But unfortunately they do no seem to have a dedicated power button/switch and they seem to just automatically power up when the aircraft is receiving power.
But surely there must be a way to apply the same logic the TEDAC is using (that being, only export when CPG is occupied) to the 4 other MPDs.