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 commentPaul Campbell commented
Absoultely having the same problem with Multiple logins from multiple agencies/roles/jobs etc.
The suggested solution of getting them all to use my one Teams ID login would never work currently. Nor that they will all agree to be federated. An absolute need to be able to rapidly switch across logins. Needs then also to be clear across the '365 suite' under which login you are currently working.