Hi Penner Capt M,
Thank you for reaching out to us on the Microsoft Q&A platform.
You don't have to download every PowerPoint presentation to your computer before adding it to a file in Microsoft Teams. If you wish to share the PowerPoint files, you can post them straight to the Teams channel or chat. Go to the channel or conversation where you wish to add the PowerPoint presentation after launching Microsoft Teams. At the top of the channel or chat window, select the Files tab. Press the "Upload" button. You have two options: drag and drop your PowerPoint file into the window or choose Upload to search for the file on your computer or OneDrive. The Upload button, which is often located at the top of the Files tab, should be clicked. Click on the dropdown menu and select Files. To upload, either drag the PowerPoint presentation files into the Files area or choose them from your computer. You can open the PowerPoint files straight in Teams when they have been posted. Simply open the PowerPoint file in Microsoft PowerPoint for the Web to participate (clicking on the file opens it in Teams by default).
If you have any additional questions, please let us know in the comments. We’re happy to assist further.
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