Could you advice me?

Hello: I'm trying to use LiveUser to add authentication and permissions on my application. I have gone thought the LiveUser documentation (model) as well as the installation's examples and even the example 5 seems so simple (just the functionality's difference between administrator and common user). Could you tell me where I may find examples a little bit more complete or could you provide me some of them? About my application, I would like to implement level 2 of permission (areas and groups), with three roles (1 - Super Administrator: manage application and application's users, 2 - Administrator: manage application, 3 - Common User: access to specific functionality). Thank you in advance. Francisco Jaen