vSphere Client Web Server and User & Groups Tab Question

Hello.

Glad to be joining the forum. The server admin on my place leaves work abruptly (and has been gone until now) and the company left me in charge to manage their new web servers. I never manage server with VmWare before, so pardon me if I got many questions.

The things that I want to ask are these :

1. Can I enable SSH access to my servers?

Because usually the developers use SSH connection to interface with the server, and the developers seem uncomfortable working in the console environment (the one we get if we go to our virtual machine - host).

So, after reading :

- http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1002979

- http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1019852

But the problem is that there are no users and groups tab in my hosts, or in my virtual machine. I use vCenter-vSphere Client to connect to my server, and I use a Windows 7 PC as a gateway to connect to the said servers. And, if I managed to enable these users and enable to grant shell access to these users, will this be any different with "standard" server-SSH access?

2. Which machine should I connect?

To enable the web server, to which machine shall I connect? The previous admin put up 4 virtual machine, but I do not know which machine will serve the web server itself. I already installed the necessary applications to all of the virtual machines, but I still confused which machine will actually serve the Internet.

The version I use will be : VMWare ESXi, 5.1.0, 838463.

Guest OS : CentOS

Thank you, and good day.