This module can add / substract any items added or removed from store.
For update stock in inventory, admin required to select item -> Select Addition/Substraction -> total no items -> update price per item (If newly arrived item has raised price then existing price) -> Billing Attachment -> PO Number -> Remark of new arrival or Substraction.
We already having stock in our store. Few items are used for internal purpose which is taken from store and placed at same place once its work will complete.
Example we having 4 hammers in our store, we have taken 2 hammers for internal use. So in this case administrator will dispatch item from store and assign to specific user of store so that track will get maintain who has taken 2 hammers.