Question about Freeradius for mobile device authentication

Hi, I've been asked to setup a platform for mobile device authentication. I'm looking into setting up Freeradius with a MySQL backend for this. The request that has been been is to verify users on three items: - msisdn - username - password My question is - can this authentication be done in different ways for different groups of users. Say group A wants the unique combination of msisdn, username, password to grant them access - however group B wants a pool of msisdns that are valid for all of their username + password combinations. If someone could be so kind as to maybe give an example of how to do this it would be greatly appreciated. Thanks, - Jasper