Add more that one product at a time

Add more that one product at a time

Hi
I really need to be able to bulk add products to invoices. I add a minimum of 10 products to any one invoice and it's doing my head in the way i have to find a prod in the product selection screen ( i have a lot of porducts) then click add then do it all over again. Is there a way that i can select all the products i want and just add them all?
Cheers