This feature allows you to insert an informational or promotional text that will be displayed immediately before a specific section of the checkout form.
Procedure
1. Access the Checkout edit page (file edit.php).
2. Scroll down to the Fields to show box and locate the specific section (for example, Billing Details or Shipping) where you want to add the message.
3. Within the section, scroll down to the box titled Settings.
4. In the settings block, find the item Custom Message.
5. Check the box next to Insert custom message.
6. Once checked, a new text box labeled again Custom Message will immediately appear below.
7. Use the text editor (TinyMCE) to enter and format the content of the message you want to show to users.
8. Complete saving the form to apply the changes.
