So if I have a purchase request form
I want to select Item A, for example
Once I select that, I want it to give me than a list of budget numbers to pull it out of (Item A for engineering, Item A for software, etc.)
Then autofill with a set price, and I put how many I need and/or show me how many are currently budgeted for under a specific budget line. Thus I know how many I can take from that budget line.