Working in Microsoft Teams lets you work on files together at the same time. Also, messages about the document stay with it and will show up in your team conversations.
Each channel has its own file folder where you can share files for that specific channel. To access that folder, go to the channel and select the Files tab above the conversation window. You can upload existing files or create new ones. When you upload a file, it creates a copy in Teams.
Note: Make sure to use the Files tab at the top of the channel conversation window instead of the “Files” button on the left side of the app. That button gives you access to ALL of your cloud files, rather than just the files for a specific channel.
There are two primary ways to upload existing files into your channel. Any files you upload will be accessible by any member of your Team. And just like in SharePoint, you can pin specific files to the top of your list for easy access.
To create a Word, PowerPoint, or Excel document in Teams, select New, then select the kind of file you'd like to create. The new file will open in Teams so you can begin editing it, and if you'd prefer to work in the desktop version of the app, select More options to the left of the Close button on the ribbon.
As soon as it's created, your new file will be available for your team members to edit as well.
Files stored in your Team's file library are accessible to every member of the Team. No need to check files out or worry about if one of your colleagues has the document open. Just open the file you need to edit, and if other team members are editing it too, your changes will merge in real-time as you work.
Edit the file. Colored flags show who else is working on it with you.
If the file is a Word, Excel, PowerPoint, the easiest way to share is to open the file with the appropriate Office for the web or desktop app and select Share towards the top right corner of the window. That will open the Share dialog box where you can enter the aliases or email addresses of people you want to share with.
If you want to share with people outside your organization, you may have to click the permissions drop-down (right above where you add the people you want to share with) and select that Specific People can access the file.
Option 1:
Anywhere in Teams, look for the paperclip icon to Attach a file.
Option 2:
Filter files to find documents that have been created or edited in your channels, or downloaded to your computer.
Select Files and choose a filter:
OneDrive for Business: Your personal files
Teams: Files that are shared and collaborated on by multiple people
SharePoint: Shared documents with entire departments or organization-wide