Thank you for your continued feedback. Screen sharing on Chrome and Chromium-based Edge is fully supported. For more information, please visit https://docs.microsoft.com/en-us/microsoftteams/limits-specifications-teams#browsers.
For Safari and Firefox, only incoming screen sharing is currently supported. Safari outgoing screen sharing is on the backlog, and Firefox outgoing screen sharing is under review.
An error occurred while saving the commentChad commented
Without this feature the tool is not really that useful when meeting with external customers. Teams has been out for over a year, and this is basic functionality provided by WebEx, GoToMeeting, and others.
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.