We want the requestor to be able to go to the storage page and create an additional disk to add to their VM.
I added VRMGuestAgent to my template and ran "winservice -i -h Manager_Service_Hostname_fdqn:portnumber -p ssl". I updated the command line to point to my IaaS box which has the manager service running. I verified that after building a new VM that the Guest Agent service is running on the VM. I added the custom property I did add the VirtualMachine.Admin.UseGuestAgent custom property and set it to true.
I created a new request with a second disk requested. I can see the disk on the new VM and it is active but there is no partition on it.