https://woocommerce.com/products/product-add-ons/
WooCommerce Product Add-ons helps you add extra options to products which your customers can select from, when adding to the cart, with an optional fee for each extra option. Add-ons can be checkboxes, a select box, or custom text input.Create additional product personalization optionssupports required fields, text areas, checkboxes, radios, select boxes, custom price inputs and file upload boxes.
Changelog * Important: New - Product Add-Ons now requires Product Bundles 7.0+. * Important: New - Product Add-Ons now requiresComposite Products 9.0+. * Tweak - Reveal add-on subtotals only when an add-on has been selected in products with only optional add-ons. * Fix - Resolved a PHP error that can occur when multiple choice add-on's value is empty * Fix - Resolved a PHP error that can occasionally occur when using WooPayments
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