I'd like to create an invoice where the customer has the option to add an Item directly on the invoice, specifically the option to add shipping insurance.
Unfortunately that's not possible with Square Invoices. Any items to be added to an invoice has to be done by you. I suggest using Square Online for what you're trying to accomplish. Create a Shipping Insurance item so the customer will see the open when adding their items to their cart.
Hi @Isvitia 👋
I just wanted to let you know that we recently launched Shipping for Square Invoices. To learn more about this feature, please check out this Support Article.
I hope this information is helpful but please do let me know if you have any additional questions.
Square Community