Create Mailbox with shared Calendar

# Set user variables
$TenantUser="admin@tenant.onmicrosoft.com"
$UserDomain="@domain.com"
$FirstName="Firstname"
$LastName="Lastname"
$Username="$FirstName"
$Password="P@ssW0rd!"
$License="O365_BUSINESS_ESSENTIALS"

# Set UserUPN
$UserUPN="$Username$UserDomain"

# Connect to Exchange Online
Import-Module ExchangeOnlineManagement
Connect-ExchangeOnline -UserPrincipalName $TenantUser

# Create user mailbox
New-Mailbox -Alias $Username -Name $Username -FirstName $FirstName -LastName $LastName -DisplayName "$FirstName $LastName" -MicrosoftOnlineServicesID $UserUPN -Password (ConvertTo-SecureString -String $Password -AsPlainText -Force) -ResetPasswordOnNextLogon $false

# Wait 20 seconds before next step
Start-Sleep -s 20

# Connect to AzureAD
Connect-AzureAD -AccountId $TenantUser

# Set UsageLocation NL
Set-AzureADUser -ObjectID $UserUPN -UsageLocation "NL"

$AddSKU = $License,""
$RemoveSKU = ""

# Create the objects we need to add and remove licenses
$AddLicense = New-Object -TypeName Microsoft.Open.AzureAD.Model.AssignedLicense
$RemoveLicense = ""
$Licenses = New-Object -TypeName Microsoft.Open.AzureAD.Model.AssignedLicenses

# Find the SkuID of the license we want to add and remove
[string[]]$AddLicenseSkuId = (Get-AzureADSubscribedSku | Where-Object -Property SkuPartNumber -Value $AddSKU -IN).SkuID
[string[]]$RemoveLicenseSkuiD = (Get-AzureADSubscribedSku | Where-Object -Property SkuPartNumber -Value $RemoveSKU -IN).SkuID

# remove licenses
foreach ($SkuId in $RemoveLicenseSkuiD) {
    
    [string]$RemoveLicense = $SkuId
    $Licenses.AddLicenses = @()
    $Licenses.RemoveLicenses = @()
    $Licenses.RemoveLicenses = $RemoveLicense

$user_licenses = (Get-AzureADUser -ObjectId "O365.Test@domain.com").AssignedLicenses.SkuId
    $SkuPartNumber = Get-AzureADSubscribedSku | where {$_.SkuID -like $SkuId} | select -ExpandProperty SkuPartNumber
    
    if ($SkuId -in $user_licenses) {
        Set-AzureADUserLicense -ObjectId $UserUPN -AssignedLicenses $licenses
        Write-Host $SkuPartNumber "license has been removed!" -BackgroundColor Black -ForegroundColor Red
    } else {
        Write-Host $SkuPartNumber "was not assigned! - Skipping" -BackgroundColor Black -ForegroundColor Yellow
    }
}

# add licenses
foreach ($SkuId in $AddLicenseSkuId) {
    
    $AddLicense.SkuId = $SkuId
    $Licenses.AddLicenses = @()
    $Licenses.RemoveLicenses = @()
    $Licenses.AddLicenses = $AddLicense

$user_licenses = (Get-AzureADUser -ObjectId $UserUPN).AssignedLicenses.SkuId
    $SkuPartNumber = Get-AzureADSubscribedSku | where {$_.SkuID -like $SkuId} | select -ExpandProperty SkuPartNumber
    
    if ($SkuId -notin $user_licenses) {
        Set-AzureADUserLicense -ObjectId $UserUPN -AssignedLicenses $licenses
        Write-Host "Assigned license:"$SkuPartNumber -BackgroundColor Black -ForegroundColor Green
    } else {
        Write-Host $SkuPartNumber "was already assigned! - Skipping" -BackgroundColor Black -ForegroundColor Yellow
    }
}

# Wait 80 seconds before next step
Start-Sleep -s 80

# Connect to Exchange Online
Connect-ExchangeOnline -UserPrincipalName $TenantUser

# Set user mailbox language NL
Set-MailboxRegionalConfiguration -Identity $UserUPN -Language nl-nl -LocalizeDefaultFolderName -TimeZone "W. Europe Standard Time"

# Set default calendar permissions
Set-MailboxFolderPermission -Identity ${UserUPN}:\Agenda -User Default -AccessRights PublishingEditor

Create Mailbox with shared Calendar

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