Custom field title

[sandomatyas]

There is an option to show/hide the title of a custom field. It works well on the productdetails page, I can hide it if I dont't need it, but it shows always in the cart and the order confirmation emails.
Is it possible to use the field's settings here?

[Studio 42]

No. You have not such setting.
If you need more flexible cart customfield see https://shop.st42.fr/en/products/shortcodes.htm and in the doc https://shop.st42.fr/en/shorcodes-english-doc#cart_persons
You can set option to hide/show the title in cart and/or in the mini-cart and many more...