A location group is a set of host systems that are typically in the same
physical location, which can be selected at virtual system creation time.
The actual host system is then chosen from the members of the location group.
Assignment of systems to groups is done on on the Host Systems pages.
For example, if you had host systems in the US east and west coasts, you
might create a location group for each coast to allow virtual systems to be
more easily physically distributed.