CDbAuthManager and Custom users Table


new to Yii and to this forum. I have read Yii docs about authentication and authorization and it have helped me a lot but have question. I want to setup personal RBAC system that will fit my needs. I have created tables in system.web.auth schema and I wanted to add the user role also in my users table. Here goes my question: Which table among the three stores user role? Whichfield of that table should I add to my user table?

Sorry if it is obvious, I’m just starting Yii from vanilla PHP/CI