Awesome work Jules & Otoy team! It's quite bold to push in the direction you guys are pushing the render engine AND the business model! Sounds like some might get frustrated by their perception of the license changes coming, but I can't complain! I'm glad I spent what I did on the V3+c4d plugin ...

If you've been through the Video tutorials section of the documentation on the website, unfortunately there aren't any tutorial videos that cover Volumes from within Cinema 4d, but If you check out the standalone videos for 3x. these 3 videos might help:
https://docs.otoy.com/#28Standalone_Edition ...