The engineering team is continuing to work on adding support for multiple accounts on desktop clients. We will first launch support for 1 work/school account and 1 personal account so users can enjoy Teams for work and personal side-by-side. Windows and MacOS. Support for multiple work accounts is still being worked on and will come at a later date.
You can track status via the roadmap here: https://www.microsoft.com/microsoft-365/roadmap?searchterms=68845.
An error occurred while saving the commentAnonymous commented
I use the Web portal teams on one account and the desktop app for my other MS account. Crop the window so they are both the same size and you don't even notice the difference.