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Type in the course code (e.g. ECE 106, MTE 484). You should see an option for the Members of that Team (e.g. ECE 106 Members, MTE 484). Select the Members group.
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Click on the pencil icon drop-down to select the access level.
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Enter a message the Message… field, if desired and click the Grant access button.
For future terms, only the membership of the Microsoft Team needs to be adjusted as TAs leave and join the team. The same access rights are assigned to all members of the Team.