Unifi Protect Doorbell and Echo Show devices

I’ve gotten UniFi Protect and Echo set up but I am trying to automate the ringing of a doorbell to show camera feed on 3 (out of 5) Echo Show units and Chime on one (out of five)

Have seen quite a few examples here of people trying this out but can’t quite get around it. I followed this YouTube video which at least allowed me to chime on one of my Alexa Echo (but no video feed).