User that login the system for the first time should have notify their personal email addresses to their faculty's student affairs before. And the student affairs should have identify the email address to their account.
Folllow the Forgot My Password link that is on the login screen. Fill the Email field with the email address you gave your faculty, and by clicking Send the verification code button ensure verifying your email address. Afterwards check your email account, follow the directions in the message.
If your email address is not registered yet, the system will warn you. In this situation, connect your faculty's student affairs.