Send a password reset email:
  1. Navigate to [yoursite]/wp-login.php
  2. Click the link: Lost your password?
  3. Enter the username or E-mail address associated with your account
  4. Click Get New Password
  5. Follow the instructions in the password reset email received
Request a WordPress administrator create a new password:
  1. Navigate to Users
  2. Hover over the user whose password should be changed and click Edit
  3. Scroll to the New Password section and type in new passwords into the two boxes
  4. Click Update Profile