The other simpler way is to configure the same using CFNA and CFB. If 1000 is the number for the Manager, set it to forward to 2000 which is the secretary and on 2000 set the Call forward no answer and busy to forward to Boss extension say 3000, set the ring no answer timer to 8 - 10 seconds for 2 rings. You can also then set 3000 to CFNA and CFB to 2000 or to a VM box.
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.