How i can to assign permission to a new users recently created?

Hi,

I have some questions as the following:

(1) Which permissions are there in bonita?
(2) What kind of permissions that are there in bonita
(3)How i can to assign a visualization permissions of bonita
(4)How i can assign wich users can to start a case?
(5)How i can assign, which users can to create users?
(6)How i can assign, which users can to see the administrator panel of Bonita Portal?

Regards!