Training Livestream - Realtime Simulation and Volume Modelling Experiments - May 2 - Live from Epic!

Hi guys, in a 4.25 theres a plugin already in a engine content, go to plugins and search for Volumetrics and just tick it on. posted this info on a twitter, and I think that this should be also in here. Also does anyone knows if it have to be in square? Can I set boundaries in some kind of cuboid?