I've followed instructions before on creating the Custom POS buttons in RMS, so I'm familiar with how to do it, I just don't have access to the list of internal commands to use.

I would like to create a custom button that would bring up the window to find and item and edit its properties (price, discount, etc).

There are times when an item is marked wrong, or has other properties that need to be edited before we can sell it, and I would like to set a button to facilitate that right from the POS screen instead of switching over to the Store Operations Manager app to do so.