Hi @helfgar!
Since this isn’t a WooCommerce core feature, you would require custom coding to achieve it. Custom coding is outside of our scope of support, so I am leaving this thread open for a bit to see if anyone can chime in to help you out.
Either way, I found an article* that could be helpful to your case:
https://www.damiencarbery.com/2019/09/multiple-required-fields-in-woocommerce/
*Read through the comments.
For additional assistance on this topic, we recommend getting in touch with one of the customization experts listed on the WooCommerce Customizations Page.
Also, you can visit the WooCommerce Facebook group or the #developers channel of the WooCommerce Community Slack, you could find help from the community of open-source developers for WooCommerce that hangs in there.
Cheers!