If you wish to pause your subscription, you can switch automatic payments to OFF in your account settings.
When automatic payments are OFF, you'll receive an automated message when your current membership period is nearing expiry - this will let you know how to reactivate your account manually for a further month/year, should you wish to do so.
If your account has automatic payments ON, payment will be made automatically and you will receive an email letting you know that your subscription has been extended for a further month/year.