By: Mike Pfeiffer

1. You would modify the process block like so:

Process {
  $PSBoundParameters["Password"] = ConvertTo-SecureString -AsPlainText $Password -Force
  New-Mailbox @PSBoundParameters
}

2. Try this (untested but I think it should work):

Process {
  $PSBoundParameters["Password"] = ConvertTo-SecureString -AsPlainText $Password -Force
  $mb = New-Mailbox @PSBoundParameters
  set-user -identity $mb.alias -company “pretendco”
  write-output $mb
}