The user can reset their password through the lost your password link on login screen your site:
Navigate to the login screen at https:/mysite.com/login (replace mysite.com with your actual domain and installation location). Under the login, click forgot password.
Enter the email address of the account **Click **Reset and email New Password to have the password sent to your email address.
Check your inbox for a password reset email. Click on the URL provided in the email and enter a new password.