Share files from OneDrive 
1. Initiate a group or individual chat. For more info, visit:
a. How to start an individual chat in MS Team?
b. How to start a group chat in MS Team?
2. To share a OneDrive file, click on “Attach” icon under “Type a new message” chat box > select “OneDrive” > navigate through your folders to find the file to be shared > select the file and click on “Share”.
1. To share a file from your Computer, click on “Attach” icon under “Type a new message” chat box > select “Upload from my computer” > navigate through your folders to find the file to be shared > select the file and click on “Share”.