Office 365 Powershell: Delegate Calender rights

Use the following steps to delegate (Calender) rights to a specific user.

The first step is to specify your (administrator) credentials:

$LiveCred = Get-Credential

Then create the session:

$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell/ -Credential $LiveCred -Authentication Basic –AllowRedirection

Now import the Office 365 session using the following command:

Import-PSSession $Session

Use the following command to delegate the calender from user1 to specified user2:

Add-MailboxFolderPermission -Identity user1@domain.com:\calendar -user user2@domain.com -AccessRights Editor

Et voilà! The calender rights are set.