Le blog technique

#STEP 1: Install WindowsAutopilotIntune Powershell module (if required, need to run PowerShell as admin)
    Install-module WindowsAutopilotIntune -Force -AllowClobber

#STEP 2: Install WindowsAutopilotIntune Powershell module
    Import-module WindowsAutopilotIntune

#STEP 3: Connect to Microsoft Graph
    Connect-MgGraph -scopes "Group.ReadWrite.All, Device.ReadWrite.All, DeviceManagementManagedDevices.ReadWrite.All, DeviceManagementServiceConfig.ReadWrite.All, GroupMember.ReadWrite.All"

#STEP 4: Get the Autopilot devices Serial Numbers in a variable $DeviceSNs
    $DeviceSNs = Get-Content "c:\Windows\Temp\AutopilotDeviceSNlist.txt"

#STEP 5: Collect the Autopilot devices IDs
    $Date = (get-date).ToString("yyyy-MM-dd")
    foreach ($DeviceSN in $DeviceSNs)
    {
        #Export Autopilot devices IDs to a text file called AutopilotDeviceIDlist.txt
        (Get-AutopilotDevice -serial $DeviceSN).id | Out-File C:\Windows\Temp\AutopilotDeviceIDlist-$Date.txt -Append
    }

#STEP 6: Add or Update a group tag on Autopilot devices
    #Provide a Group Tag
    $Grouptag = Read-Host -Prompt "Please provide a group tag"
    #Get the Autopilot devices IDs in a variable $DeviceIDs
    $DeviceIDs = Get-Content "c:\Windows\Temp\AutopilotDeviceIDlist-$Date.txt"
    foreach ($DeviceID in $DeviceIDs)
    {
        #Get current device information.
        $CurrentDevice = Get-AutopilotDevice -id $DeviceID
        Write-host "Working on device $DeviceID" -ForegroundColor Cyan
        #Apply Group Tag on devices which are in AutopilotDeviceIDlist.txt
        Set-AutopilotDevice -id $DeviceID -groupTag $Grouptag
    }