Custom field only on specific product

-- HikaShop version -- : 6.1.1
-- Joomla version -- : 5.4.1
-- PHP version -- : 8.3.25
-- Browser(s) name and version -- : Firefox

Hi There,


We're selling e-tickets on our website, now we want to add a additional ticket type which require a custom input from the customer.
How can i request a custom input from the customer only when this product is purchased?

So, if this product is not being ordered, the question is being skipped.


Thanks,
Kind regards,

Patrick

And with custom input, i meant a custom question from the customer.