Expandable Custom field

I’ve got the same issue! Everything works great except I need a text box for the purchaser to enter their name. The person making the purchase is occasionally not the same person it goes go. Basically it’s a “name of attendee:” __________ then add to cart and the cart the item in the cart is has the “name of attendee” as option 1 (so basically I want a text box rather than a list box).