Manage Outlook Folder Permission
So the story is Bugs Bunny want Access to Daffy Duck Email (owner), Calendar(Read only), and Contacts (read only) and also wants access to Tweety Birds Contact (read only)command -Identity "[domain\user:\Folder]" -User "[domain\user]" -AccessRights [permission]
Add-MailboxFolderPermission –Identity DDuck@acme.com:\Inbox-AccessRight Owner -User BBunny@acme.com
Add-MailboxFolderPermission –Identity DDuck@acme.com:\Calendar -AccessRight ReadItems -User BBunny@acme.com
Add-MailboxFolderPermission –Identity DDuck@acme.com:\Contacts -AccessRight ReadItems -User BBunny@acme.com
Add-MailboxFolderPermission –Identity TBird@acme.com:\Contacts -AccessRight ReadItems -User BBunny@acme.com