Setting up Auto-Fill for Inventory Items

Hello, I was wondering if there is a way to have certain inventory account numbers auto-fill. For example, I have a subaccount cell for commercial or residential jobs on screen 12-2 (Inventory Allocation). The jobs are marked commercial or residential in the initial job set up. How can I get that to auto-fill. I would like to cut down on the number of key strokes especially when the categories are repeated for each entry.

I have the same issue with "Account", "Cost Code", and "Cost Type." I don't have administrative access, but the woman who does suggested come to this site for answers.

While I'm here, I have a drop down box that I would like to use a key-stroke for, but I am forced to use the mouse for that one action. Does anyone have any ideas as to how to set that up to accept a key stroke?

Thank you in advance for any help anyone may be able to provide.