CmdID / PowerShell / Cmdlets / Set
Set-CsAutoAttendant
Use the Set-CsAutoAttendant cmdlet to modify the properties of an existing Auto Attendant (AA). Microsoft Teams PowerShell reference
From the Microsoft Teams PowerShell reference 2 parameters Its page in the reference
Parameters
-InstanceThe Instance parameter is the object reference to the AA to be modified.-TenantThis parameter is reserved for Microsoft internal use only.