The procedure for hiding a user in the corporate directory will vary depending on your directory integration. Please see the following link for the steps for hiding users in DC Directory and Active Directory. Regarding multiple directories, the built in corporate directory looks at one particular directory for its lookups. You could build an XML application that would look at different directories or different branches of a single directory. I believe Berbee (www.berbee.com) makes an application that will do this.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.