Hi and welcome, @Pioneer013 👋
I just want to make sure we're on the same page before moving forward here. You posted in the API section of the Seller Community - are you referring to our API when you ask this question?
Or are you referring to the optional note that appears within the Square Point of Sale app when accepting a payment as Other Gift Card or Certificate?
If you're asking about this screen within the Square Point of Sale app, I can confirm that it is not possible to customize the checkout flow of the app.
