FIFO lot alocation with LPN

Hi ALL,

We have a requirement where FIFO lot has to be picked , it is working fine loose stock with out LPN . We have move orders coming from external source, If I run pick slip report with allocation as yes, system is allocating LPN but unable to allocate LOT

ITem1 LPN1 -->Lot1--100 quantity

Item 1 LPN2--> LOT2 50 quantiry

If I run pick slip system is allocating LPN but not LOT , I am using the following setup, can we achieve system allocating from LPN1 LOT1. please guide me in setting up FIFO lot allocation with correct LPN we can see pick slip with LPN but not LOT