You can upload files or folders directly to the Files tab or create a new file in any Team channel.
Upload a file or folder:
While in a channel, select Files at the top of the app, select Upload
, and then choose the file, folder or template to upload.
Create a new file:
While in a channel, select Files at the top of the app, then select New
. Choose to create a folder, Word document, Excel workbook, PowerPoint presentation, OneNote notebook, Visio drawing or Forms for Excel. You can also create a link to a website or file.