# One-time add charge (Legacy)

Go to main page of **Shopify admin -> Avis Product Options -> Avis Option**.\
Click on Create Option Set, then add an Option type for extra charges **(Radio Button, Drop-down Menu, Color Swatch, and Image Swatch)**.

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Fill in the values that you want to set charges, for example, we have here the sizes with different price point.&#x20;

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In this case, we want the size to count only as 1 regardless of the main product quantity.

Tick on "One time add charge"

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Choose your desired group of option and hit "Save"

<figure><img src="https://3264408981-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F3ClFZbSMFYUfUOKXAOru%2Fuploads%2FB9em8TzEPtW9g3ciYKrc%2Fimage.png?alt=media&#x26;token=42902584-704f-4ec4-af28-1cbed48a426f" alt=""><figcaption></figcaption></figure>