Case quantity's for products. When setting up a new product if you had a 'case quantity' option that you could set. Then when receiving items in inventory you have the option of entering the case and purchase price. RGP could calculate individual product cost.
For entering quantity adjustments it would be helpful to enter the info in a table or spreadsheet and import the adjusted quantities. We use the inventory count report and take inventory but right now someone has to go into each product to enter the actual quantity.