1. Click Reset Password in the main cPanel login page

2. Enter your cPanel username and click on Reset Password

3. An email will be sent on the address used when the account was created

4. Once done, the email with the confirmatin code will be sent and you will have to use the code in the cPanel resert passwod page

5. A window with the new password will appear

If you allready know the password but you want to set another one you will have to access Preferences section > Password&Security menu under cPanel.