1. Open your browser and head to : https://www.microsoft.com/en-us/microsoft-teams/download-app
and select download app for dekstop
2. Select Download the new Teams for work oe school
3 Run the installer
4 Sign in using your SSO or chose the account you are already singed into See Sing in to Microsoft Teams https://colum.teamdynamix.com/TDClient/2029/Portal/KB/ArticleDet?ID=100399
5 On Mac there are some permissions to set see Teams Permissions for Mac Article https://colum.teamdynamix.com/TDClient/2029/Portal/KB/ArticleDet?ID=161736