This article will cover how you can set up to follow a channel to get notified when there is a new message in there. You will only get notified for Private Chats and when someone else @'s you if you do not follow a channel.
- Signed into Teams browser or app.
- Find the channel you want to receive notifications for
- Click the ... next to the Channel
- Select Follow this Channel
You will now have notifications pop up when a message is added to that Channel.