Can we use one or more account in single ms teams app

Hello Rockycobb Raymond ,

You can open MS Teams app on PC/laptop using multiple accounts in parallel, but not under single desktop app.

You can open the second account in web browser and install the site as an App.

1. Login to Teams desktop app with Account 1. You will enjoy the features of Teams app.
2. Open Chrome Browser and create Profiles for Account 2, Account 3, so on & so forth.
3. Login to https://teams.microsoft.com/ using Account 2.
4. Go to Setting & More (...) > APPS > Install This site as an App
5. Pop up window appears where you can rename APP as needed
6. You will now see Teams for Account 2 is open as PWA.
7. You can pin this to your Taskbar or create as shortcut and use both Account 1 & Account 2 simultaneously.

*If you feel the response is appropriate mark as best response