This topic is about delegation of controle of virtual machines with Virtual Machine Manager self service portal.
you can make a profile with in VMM, and the user of that profile can only controle the virtual machines you want as an administrator.
First you login for example via SharePoint Portal to the Vitual Machine environment :
You login with the right user credentials to get in the VMM self service portal.
Then you get in the serverrole environment of Microsoft System Center Virtual Machine Manager.
The administrator gives you the rights to the right environment in SCVMM with the right Virtual Machine to manage with
delegation of controle.
You can connect all your own virtual machine with the right delegation of controle :
More Here
Courtesy:http://mountainss.wordpress.com/2011/04/20/delegation-of-control-with-scvmm-2008-r2-self-service-portal/