The feature list of EasySides describe it as follows:
Multicast let you broadcast to other computers on your LAN.
The receiving Windows PC/laptop can receive the Live Screen or confidence monitor output. Video and audio streaming not supported though Note that this puts on an additional load on your computer and also on your LAN bandwidth.
We used it years ago and I remember that the configuration of it was straight forward.
MAy be Wai Kuen has a manual or description of this feature, If so, he will post it, I presume, once he reads this post.
Regards