Any shortcut to add lines and make it highlighted

1

while selling many items from my inventory, I have to click add lines manually every time I finish adding one product from the inventory.

is there a shortcut, or a way add lines after reading the barcode from the scanner and writing the quantity.
For example when I press CTRL + L in the web browser it goes to the address bar and highlight it.

2

You can add multiple lines at once, then Tab between fields.

3

I think you can set the forms default so that you have more lines to start