i got it all connected and i get to this command and i get this error
PS C:\Users\beardsleeg.OP-TECH> Add-MailboxFolderPermission -Identity ConferenceLine:\calendar -User confrence -AccessR
ights Reviewer
The user "confrence" is either not valid SMTP address, or there is no matching information.
+ CategoryInfo : NotSpecified: (0:Int32) [Add-MailboxFolderPermission], InvalidExternalUserIdException
+ FullyQualifiedErrorId : F204138D,Microsoft.Exchange.Management.StoreTasks.AddMailboxFolderPermission