Each order = 1 pick slip ($2 base). Cases ship from stock; # Orders bill the invoice. Identical rows stack as ×count — use −1 to remove one (units return to stock), × to remove the whole stack.

Everything that leaves for a 3PL customer — staged above, shipped below. Stage a load here (mixed shipments waiting on an outside factory, e.g. 500ml ready waiting for 1L), then dispatch it; palletizing is invoiced on dispatch unless you decline it. DL's own operations and raw materials go out on Outbound instead.