I am running vMix 28 on a system with SIX monitors connected to it (Church worship).

One monitor is used for the web browser monitoring the stream on Facebook.

One monitor is used for vMIX itself.

One monitor is a custom input in vMix using layers to show all our cameras and the live stream for the camera operators (sent as Output 2 in vMix).

One monitor is the Projector for display to the local audience (Announcements, slides, videos...), not a copy of the live stream (Mix 4 in vMix, send as Output 3).

One monitor is a large screen TV at the back of the sanctuary for use in karaoke style songs and things needed by the people on the stage though it's often just a copy of the live stream (Mix 3 in vMIx, sent as Output 4).

And last one monitor is just a copy of the live stream sent to our Nursery (sent as Output 1 in vMix).

All four vMix outputs are set up to send out NDI streams.

I use NDI Studio Monitor to read each of those streams and output them to the appropriate monitor.

All this is done on one PC but if I were designing this again I would separate out the last four screens in that arrangement to a second PC to reduce the load on the PC running vMix. It's a function that doesn't need a lot of PC and doesn't need to be be babysat. It just needs a video card that supports four monitors. Instead The right now main PC has two such video cards.

The one thing I don't use is either of the "FullScreen"s available though I could use one of them for the Nursery.

We do also have a laptop running ProPresenter 7 feeding us the song captions and slides via NDI as well.



TLDR - There are other ways to achieve those multiple output screens you want and they aren't very hard to do.