The Starplex forum

So who's bright idea was it remove the ability to manage Exchange Public Folder permissions from the Exchange management GUI and transfer to the shell. Why not have both?

If you upgrade to EXchange 2010 SP1, then you will have the ability to alter permissions on Public Folders through the GUI, hooray.

In the meantime, the Powershell way is as follows;
Adding an Admin user
Add-PublicFolderAdministrativePermission -Identity "\public folder name" -User "User Name" -AccessRights AllExtendedRights -InheritanceType SelfAndChildren

See http://technet.microsoft.com/en-us/library/aa997986.aspx for more detailed syntax


Adding a client to a public folder
Add-PublicFolderClientPermission -Identity "\public folder name" -AccessRights Role Type -User User Name

Role Type:
None
Owner
Editor
Author
PublishingEditor
PublishingAuthor
NonEditingAuthor
Contributor

See http://technet.microsoft.com/en-us/library/bb124743.aspx for more detailed syntax