Quicker method of amending allocations on sales orders

At present, if stock is allocated on order entry and the allocated quantities subsequently need to be amended on a multi-line order, it is a long-winded task to work through each line to amend the allocations. It would be much easier to see and amend the allocated quantities after selecting the order/customer/date and not need to launch further forms from there. Also having the option to allocate or unallocated all or selected lines would be a great time-saving.