This is currently in Preview – planned to release very soon.
In the following weeks, Teams will be rolling out support on Safari 11+ on macOS. While in preview, there are known issues with Safari’s ITP mode and it is advised that users disable Safari’s Intelligent Tracking Prevention.
We are getting closer… the team is almost ready to rollout MacOS notification support internally for testing – we hope to have it to the public by the end of this quarter.
Thanks!Matt Shirley commented
Notifications appearing on the wrong monitor. Notifications appearing in the wrong space. Missed notifications due to screen resolution changes. Unprofessional notifications appearing on the projection screen in front of a massive audience because the macOS app doesn't respect the system-wide "do not disturb" setting.
This is actively hostile to your users, and should be the #1 priority for your macOS developer team.