How-To Question: Can I Set Up an SLA Policy for VIP Customers?

We have a group of VIP customers that we want to provide with a higher level of service. We'd like to set up an SLA policy that will ensure that their tickets are responded to and resolved within a certain timeframe. Is it possible to create an SLA policy that is specific to a certain group of users? If so, how would we go about setting this up? We've looked at the SLA settings, but we can't seem to find a way to do this. Any guidance or advice on how to achieve this would be greatly appreciated. We want to make sure that we're meeting the expectations of our most valuable customers.