CmdID

CmdID / PowerShell / Cmdlets / Add

Add-TeamUser

The Add-TeamUser adds an owner or member to the team, and to the unified group which backs the team. Microsoft Teams PowerShell reference

From the Microsoft Teams PowerShell reference 3 parameters Its page in the reference

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Parameters

3 in the Microsoft Teams PowerShell reference
-GroupIdGroupId of the team.
-RoleMember or Owner.
-UserUPN of a user of the organization (user principal name - e.g.