You can customize the checkout page for a basic payment button in a variety of ways, including to:
- Allow your customers to change their order quantities.
- Allow your customers to add special instructions in a message to you.
- Prompt your customers for their shipping address.
- Redirect your customers to a specific URL when they cancel or finish their checkout.
You can also use advanced variables to customize your button. For details, see Customize advanced features on our Developer Portal.