$GetLicense = Get-AzureADSubscribedSku | Where-Object { $_.SkuPartNumber -like "O365_BUSINESS_ESSENTIALS" }
$Mail = "user@enterprise.org"

# Create Licenses Objects
$License = New-Object -TypeName Microsoft.Open.AzureAD.Model.AssignedLicense
$Licenses = New-Object -TypeName Microsoft.Open.AzureAD.Model.AssignedLicenses
$License.SkuId = $GetLicense.SkuId
# Remove YAMMER
$License.DisabledPlans += ($GetLicense.ServicePlans | Where-Object { $_.ServicePlanName -like "YAMMER_ENTERPRISE" }).ServicePlanId
# Set Licenses
$Licenses.AddLicenses = $License
Write-Host -ForegroundColor Yellow "Attribution d'une licence $UserLicense..."
Set-AzureADUserLicense -ObjectId $Mail -AssignedLicenses $Licenses