Also wondering this! I hope it's available at some point

On Xcode Beta 5, I haven't figured out how to make it work yet either.

Just checking, you aren't spelling the entity name wrong when loading it? You're using Reality Composer Pro and have added the entity in the project browser? I think the proper way to do it is to load the entity in the RealityView make closure and attach it to a TableSeat, and then add it to the TableSetup This is what I think based on the example project, in the GameSetup.swift file there's func loadEntityEquipment

My guess is I don't think it is supported right now, based on the session video it looks more geared around SharePlay and a FaceTime call to connect virtually