However, on PeerTube each account is linked to one or multiple channels that can be named as the users sees fit. You also have to create at least one channel when creating an account. Once the channels have been created, users can upload videos to each channel to organize their contents (for example, you could have a channel about cooking and another one about biking).
PeerTube support for offloading transcoding to other machines is <a target="_blank" rel="noopener noreferrer" href="https://github.com/Chocobozzz/PeerTube/issues/947">being discussed</a>, but not yet implemented.