sub-folders within a Stream Channel?

Hi Simon - In Stream if you want to have a main area / landing page for your videos with the ability to sub-divide or organize the videos at a 2nd level, you'll need to use a Group.

Groups in Stream are tied to O365 Groups and handle permissions as well as organizing of videos. Within a group in Stream you can make sub-channels within that group to further organize your videos.

Here is the help article we have that explains groups and channels in Stream: https://docs.microsoft.com/en-us/stream/groups-channels-overview

Does that help? Or is there a reason you can't use O365 Groups / Stream Groups right now?