Hello Alexandre,
No, currently that's not possible, however, starting from the next major version, Adaxes 2016.1, it will be possible to redirect users to a specific Web Interface based on certain rules. In particular, it will be possible to redirect based on membership in certain groups. You will be able to create 2 Web Interfaces, one of which will be the default one, and the other one for users that belong to the group, and redirect users to the necessary Web Interface automatically.