Consumption of items in a project

   Hi all,

I have a few questions about consumption of items in a project:

(I'm using Project Manufacturing)

1) In a project manufacturing enviroment, actual costs are charged to project after the items are received in project stock. However, the items are bought to be consumed in the project. Thus, we need to create a transaction so that number of items in project stock decreases and the project actual costs doesn't changed (because costs have already been charged to project). What possibilities is allowed by the system to implement it?

2) Is there any way to create a project expense internal requisition? or guideline for customizing the functionality to allow project expense internal requisition.