Document sharing and collaboration
Every time a file is shared in a conversation, it automatically gets added to the Files tab of that channel. So, even if a channel piles up with different conversations, you’ll know where to go to see that file again. Everyone in your class can see, open, and edit these files, so it’s a great way to work together in Word, PowerPoint, or Excel.
To chat and work in real-time, just open a document, select the Start conversation or chat button, and @mention the other students you’re working with. Your conversation will move over while your document stays open. Just like that, you can discuss and work on the document simultaneously.
Some resources pulled from Microsoft Support