I would like to know how to change the "Permission Denied. Kindly contact your Administrator" when a user who is not enrolled tries to reset their password? Would like to change it say something like "You have not enrolled, please enrol before using this service2?

Also, on the Reset Password and Unlock Account login screens, I want to change the text next to the username field that shows "(Example : Jsmith)". Our usernames are first name.surname and want the example to show this. Any ideas?