The WooCommerce Custom Fields plugin is bundled in Rey.
WooCommerce Custom Fields allows you to create custom product, checkout, order and user fields, provide and gather additional information in a structured way, and sell configurable products, product add-ons and extra product options. Build, manage and optimize your online store for a premium user experience, and make every field work for you.
To install it, head over to Appearance > Install Plugins and install it from there eg: https://d.pr/i/ds5w1t . You can create the field types you want afterwards
For more informations and documentation, you can head over to its Knowledge Base , but please know that for personalised support you will need to purchase your own license for it.