The domain user who is installing or configuring the AX 2012 components requires specific permissions or roles for the servers and server components. While the System Administrator will always frown when we request for certain administrator privileges for install. Now the AX support has published a detailed permissions which can be submitted to the system admin for the installer to work. However it doesn't cover much on the Retail components but nevertheless the concept applies the same to them too.
For the complete details please take a look at the AX Support site here.