How to properly create a selection list for a hyper-v server

I currently have a hyper-v host running Windows 2008 R2(small business server 2011) with 2 guest VMs. In I'd appreciate some thoughts on how to properly choose the hosts and guests in the selection list.

The hyper-v host is running backup exec 2012. I installed the backup exec remote agent on each of the two Windows 2008 R2 VMs. In my list of servers, I now see the following:

1.  hyper-v host

2.  VM guest #1

3.  VM guest #2 (this server is running SharePoint and Exchange as part of the SBS install)

4. SharePoint server farm 1 (this is the sharepoint instance from Windows 2008 R2 VM guest #2).

If I create a backup job for the hyper-v host, it allows me to select the host and the two guest VMs in it. I run the backup and it finishes successfully. however, when I go to the list of servers, the two VMs and the SharePoint server farm are listed as "never backed up".  Do I need to create separate backup for these VMs or will the job I already have cover it? I do want to be able to use the GRT functionality for SharePoint and
Exchange.

Thanks!