Quantity Tracking Expense Items

Hi,

Can we define office statitionery items (Expense Items) in Inventory and track the on hand quantity for these Expense items. What are the inventory attributes to be veriffied while defining expense items . What are the criteris for defining subinventories for expense items.

While creating PO, should this PO be created as Expense / Inventory PO  so that on entering PO receipts, on hand quantity will be updated for these expense items.

Thanks In Advance.