CmdID / PowerShell / Cmdlets / New
New-SharingPolicy
Use the New-SharingPolicy cmdlet to create a sharing policy to regulate how users inside your organization can share calendar and contact information with users outside the organization. Exchange PowerShell reference
From the Exchange PowerShell reference 7 parameters Its page in the reference
Parameters
-NameThe Name parameter specifies the name of the new sharing policy.-DomainsThe Domains parameter specifies the domains and the associated sharing options for those domains in the sharing policy.-Confirm, -cfThe Confirm switch specifies whether to show or hide the confirmation prompt.-DefaultThe Default switch specifies that this sharing policy is the default sharing policy for all mailboxes.-DomainControllerThe DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory.-EnabledThe Enabled parameter specifies whether to enable the new sharing policy.-WhatIf, -wiThe WhatIf switch shows what the command does without making any changes.