When purchasing gift cards online through the widget or contacts portal, customers must select a value for the gift card. By default, the available options are 25, 50, 100, and a custom input in your local currency. If you'd like to offer additional amount options, you can configure them by following the steps below.
Steps To create gift card amount options
1) Select the "Store option" and click on "Internal Store"
2)Select the "Product" tab and click on "Giftcard"
3) Click on the "Options Tab"
4) Use the plus sign to add an option and enter the desired gift amount you want to add.