"Double quantity" invoice

SOLVED

Hi

Is there a way to add a "double quantity" to your quotes and invoices?

We sell services so might send 2x security officers to a site for 2 days. I'd like to be able to quote and invoice using columns DESCRIPTION | QTY | DAYS | PRICE | DISCOUNT | TOTAL where the system would obviously multiply the quantity by the number of days.

At the moment I quote in Excel to show this breakdown and then invoice a simplified version. Not great.

Is this possible?