You can use shared line for phones. As I understand, you have made it.
Or you can use hunt group. http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/admin/configuration/guide/cmeadm/cmecover.html#pgfId-1106565
Q:I also need to setup press one button (ex, number 3) to dial to 199. I think it speed dial function or something like it but don't know how to start.
A: may be you can use translation and special symbol. For example, call to *3. System will make translation *3 to 199. http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/admin/configuration/guide/cmeadm/cmedialp.html
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.