To disable the Add Account Wizard for all users - I referenced the Citrix Article

But I wound up having to do a trying Method 1 (renaming CitrixReceiver.exe to CitrixReceiverWeb.exe) did not work for all users so I employed method 1 and method 2 (Adding HKLM\SOFTWARE\Policies\Citrix -"EnableFTU"=dword:00000000) together and that seemed to suppress for all users.