The the way we work our business.

1) We took sales orders from customers.

2) Then convert it into the invoice.

3) Then we load our vehicle with the help of "Loading Sheet".

4) Deliver goods to multiple customers through single vehicle.

the problem is we don't have the loading sheet feature.

I need aggregate product sale report only for selected invoices we call it  loading sheet because of it we get to know what to load in Our Truck.

Please Help me with it is very necessary for me. I have around 600 products in my warehouse.