How can i add new roles in my fosuserbundle?

i which that i can add new users role like this

    role_hierarchy:
    ROLE_ADMIN:       ROLE_USER
    ROLE_SUPER_ADMIN: ROLE_ADMIN
    ROLE_SUPER_ADMIN: ROLE_RMI
    ROLE_SUPER_ADMIN: ROLE_RM
    ROLE_SUPER_ADMIN: ROLE_RMIS
    ROLE_SUPER_ADMIN: ROLE_RP

and add them access to same path

- { path: ^/admin, role: ROLE_ADMIN ROLE_RM ROLE_RP ROLE_RMIS ROLE_RMI }

and then in my controller , i specifie what role should have to use this function

for exemple , ROLE_RP can change users name , ROLE_ADMIN can add new users ......

can any one help me to do this