title: How to add Custom Description field in Shipping methods (Backend)
body: <p>I want to add a custom field in Shipping Zone page under shipping method, it will be a text input, the user will able to add a custom message and I'll show that message in the front end.</p>
  
  <p>I noticed it saves the data in <strong><code>wp_woocommerce_shipping_zone_methods</code></strong> table which doesn't have any extra column to save the data; so I think I have to use my custom logic, but I don't know the name of the hook(s).</p>
  
  <p>So my question is, is there is <strong>any hook</strong> which will help/allow me</p>
  
  <ol>
  <li>To add a custom field.</li>
  <li>To add a custom column.</li>
  </ol>
  
  <p>TL;DR: 
  <a href="https://i.stack.imgur.com/SqtPp.png" rel="noreferrer"><img src="https://i.stack.imgur.com/SqtPp.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/J2TH4.png" rel="noreferrer"><img src="https://i.stack.imgur.com/J2TH4.png" alt="enter image description here"></a></p>