Authority to Leave (ATL) is where our courier will leave your goods at your specified delivery address without a signature in the event that nobody is available to sign for the goods. ATL does speed up the process for delivery as re-delivery is not needed. By accepting ATL Trojan Fibreglass or the courier is not responsible for the goods once they are left at the specified address. ATL will be a optional selection in the checkout process, please remember to select this option if you agree to the above. On checkout their will be a small space to leave any notes for the courier, please use this section if you need to specify any instructions for delivery. Authority to Leave is our default selection on checkout and will be selected by default please remember to uncheck if you do not give our our couriers authority to leave.