Microsoft Teams will have a new way to create channels, and it should be way easier and faster, according to the description.

Whether answering questions or taking care of mundane tasks, bots in Teams save you and others time to focus on what’s most important. To use them in a channel, one-on-one chat, or group chat ...

We recommend using public channels where possible. Alternatively, you can manually create separate Teams spaces for smaller groups of learners if channels in the unit space will not work for you.