Hey, @Denys_S .
Thank you for following up!
Shopify Plus does have a feature that allows you to customize the checkout, called customizable checkout. However, while I understand that your goal is for users to buy goods for others and be able to send the gift directly to them, I am confused why a user would not know the recipient’s address if they’re purchasing a gift for the recipient.
Can you clarify the business model or reasoning behind what you’re trying to accomplish? Do you have any examples of existing businesses doing something similar that might help?