Microsoft Teams - Add-in for Outlook
Follow the instructions below to enable the Microsoft Teams add-in for Outlook.
Click on File:
Then select "Options"
Select "Add-Ins" on the left side.
"COM Add-Ins" should be select, then click "Go"
Make sure the "Microsoft Teams Meeting Add-In" is checked, and then select "OK"
You may need to restart outlook for it populate.