create a button to add multiple fields of same category in appsheet form

[dhaval]

Hi,
I have created a form/app in AppSheet. The main idea is to record sales orders. So, the form contains the following field,
Date/Time:

Order ID:

Barcode: 

Qty: 

Now, with this setup, I can only add one barcode at a time. To add another barcode I have to start over the form. But, I want to add a "+" button somewhere besides the Barcode field where a user can add barcode fields as required. For eg: if Sales Order No.1,  has more than one item then to record this I have to fill up the form twice. But, If I can create a button beside the barcode field to add more than one barcode then I'd be able to add both the items in a single form. 

Can anyone suggest a workaround for this?