vCAC Network Profile IP Ranges

I'd like to define custom IP ranges for different Server Types within my Network Profile.

As an example:

Network Profile A:

     IP Range A: 10.10.10.0 - 10.10.10.99

     IP Range B: 10.10.10.100 - 10.10.10.199

Then when I request a machine via my Blueprint, I would like to be able to define which IP Range the machine uses for the the IP allocation.  It's clearly a function to add multiple ranges to a profile, but what's not clear is how to actually use the different ranges in any sort of intelligent manner.

My use case would be that for Client A they have 3 networks, but each network would have ranges defined by Server type (Application, Domain Controller, SQL, etc) so that we can have IPs automatically allocated but still falling within an address standard.

Any suggestions would be appreciated.