my 56 vapp has admin tab which is where you can create uses, support items, run audit reports and of course global settings. Maybe a license issue, but the custom ui should be fully featured if lic key allows.
I use my custom side much more than my vsphere side, since we have many data sources and they all need special displays for the key teams. Start with a heat map showing simepl stuff like cpu, memory, disk and network. They have your users comment back and work from there. Make applications and then put them into health trees and setup interactions so that clicking on one item in health tree drives behavior in metric graph window, or alert window in same dashboard.
