> ## Knowledge Base Index
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> Use this file to discover available pages before exploring further.
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# Product Selected: Charge a fee when a product is selected.

If you want to charge a fee if a product is chosen, follow these steps.  
  
**Step 1. **Create a product using a **dropdown** or **checkbox element.**  
**Step 2.** Add a **Fee & Discount Adjuster** element to the calculator.  
**Step 3.** Add conditional logic to the **Fee & Discount Adjuster** element, and make it trigger when the product (above) is selected.

${youtube}[Conditional Fee & Discount Adjuster](8ONEjmtjoKo)