To customize the checkout method, you can access it through the MAIN widget option panel.

Choose the checkout method that you want your store to use. Your options are:
- Same page: Checkout will show up on the same page.
- New Tab: Checkout will open in a new tab.
- Internal Pop-Up: Checkout will open in an in-page pop-up.
- External Pop-Up: Checkout will open in a pop-up.
Pop-Up Styling Options

Customize the appearance of the Shopify Checkout pop-up. These options are only available if you select either internal or external pop-up as your checkout method.
Specify a maximum width and height.
Specify a border color and rounded corners. Use 0 to not have rounded corners.
Customize the close button’s size, rounded corners, sign thickness, background color, sign color, and border color.
Specify the shadow intensity of the pop-up.