Click "Administration >> AAA >> AAA Settings". 1, 2, and 3 are corresponding to Radius, Tacacs, ad LDAP respectively. Authentication entries 1, 2, and 3 must be corresponding to authorization entries 1, 2, and 3 respectively. When all of radius, tacacs+, and local are set, the priority sequence is as follows: 1 > 2 > 3.