When a salesperson is selling stock items in the Sales module, only posted transactions update a stock item’s on-hand quantity. However, the Committed box shows the number of stock items sold but not posted. The on-hand quantity minus the committed and layaway quantities equals the quantity available for sale. The total quantity still on the shelf is automatically reflected in the Available box on the Qty/Price Info tab of the IN Stock window and also in the Available Qty. column of the IN Available Inventory Lookup window.