Set Up an Additional Charge

This article covers setup for Additional Product only. To add a regular product, see WhatsApp eShop.

1. Go to Settings > Products, and click ➕ to create a new product

2. For Product Type, select Additional Product

3. Enter a Name
   • This is the line item name shown in the order summary, invoice, and payment page — e.g., Shipping Fee

4. Set the trigger condition:

   Field	Description
   Trigger Object	Order Amount (fixed by the system)
   Operator	• ≥ Greater than or equal to • ≤ Less than or equal to • = Equal to • < Less than • > Greater than
   Threshold Amount	The amount that triggers this charge
   Discount Basis	Include Discount • calculated on the discounted (net) amount Exclude Discount • calculated on the pre-discount (gross) amount
   Charge Amount	The amount added once the condition is met
   Apply to Order Creation Methods	Multi-select: • Manual Order Creation • Chatbot • Calendar • WhatsApp Order Message Webhook

   
   

5. Click Save

Note: When an order meets the trigger condition, the system automatically adds this product to orders created through the selected method(s). You cannot manually select this product when creating a payment.

Additional Products do not appear in the regular product selection list — they can only be added to an order automatically based on the trigger condition, not manually.

Example: Completed Form

Order Creation Methods

How to Set Up Each Order Creation Method
Manual Order Creation

1. In the customer's chat, open the customer profile side panel, click the Payment icon, then click Create

2. Select the Product(s) and Quantity, and set Payment Link Expiry, Discount, and Allow Coupon as needed

3. If the order amount meets an additional charge's trigger condition, a prompt appears listing the additional charge(s) that will be added automatically and their amount, for example:

Creating this payment link will automatically add: Shipping Fee — HKD 30.00

4. To waive this charge, ☑ check Waive Additional Charge

5. Fill in the remaining payment details, then create the payment link

Example: Completed Form

Chatbot (AI Agent)

When adding a Payment step to an AI Agent flow:

1. Under Product, select the product(s) to sell and the quantity

2. Set Discount and Allow Coupon as needed

3. To waive the additional product charge, check Waive Additional Charge — "Waive applicable additional product charges for orders created through this chatbot flow"

4. The calculated amount appears in the payment link the customer receives

Example: Completed Form

Calendar

1. In Calendar settings, open ⋮ > Link Payment

2. Enable "Require payment after booking created via public booking URL"

3. Click Edit Payment to set up payment details

4. To waive the additional product charge, turn on Waive Additional Charge — "Waive applicable additional product charges for orders created through this calendar"

5. Click Update

Example: Completed Form

WhatsApp Order Message Webhook

When a customer places an order through the product catalog in your WhatsApp Business account, the system automatically adds the additional charge if the order amount meets the trigger condition.

• Learn how to connect your catalog to your WhatsApp Business account.

How It Works at Checkout

When an order is created through a selected channel and the amount meets the trigger condition, the system will:

1. Automatically add the additional charge as a separate line item in the order (e.g., Shipping Fee) — when the customer opens the payment link, they'll see this item and amount included in the total due

2. Update the order total instantly

3. Show a preview before order confirmation, listing the additional charge name, amount, and whether it has been waived

Additional charges are applied in full after discounts (a percentage discount does not reduce the additional charge amount).

If the Discount Basis is set to "Discount included," the system automatically re-evaluates whether the charge still applies after a coupon is applied.