In order for a site member to change their password in the case that it was forgotten, they will need to go to the /login page of the website.

Inside the login module, click on "Forgot your password? Click Here":

This link will redirect to the following page:

Enter the email address, complete the reCAPTCHA box and click on "Get My Password":

The system is going to send an email with a link to reset the password:

This link will redirect the member to a page where they can reset their password:

If multiple accounts were created with the same email, then the password will need to be updated manually.

If this is the case, this message will appear:

"There is more than one member with this email address. Please contact us for help resetting your account password."

If you want to change what this Pop Up message says, you can go to: Settings >> Text Labels and replace the message.

Additional Information: 

>> How to Change The Password For a Member In The Admin Dashboard

>> How To Edit The Text Labels Throughout Your Site