Question about field inputs and list filtering?

[ps2chiper]

First I want to say thanks for this awesome project. Without the plethora of Arduino libraries that are cross-platform compatible, I would be dead in the water.

Let me start by describing the project I am working on. I am building a bin restock system to help simplify part restocking. A bin has a matrix of around 40 cells and each cell has a button and led wired that can be in a state of on or off. When the led is set to on, once per day the the esp32 will send me an email of all the parts that need to be refilled (Led on means the part needs to be refilled). I would like to attach an LCD display to add additional functionality. One of the functions I would like to add is a "Part Isolation function" that would turn off all the leds and just blink the selected part number.

I would like to have a text field at the top and a list of part numbers below it. As I enter each digit one at a time via a keypad, I would like the menu to start filtering out the incompatible part numbers from the selection list. I would also like to be able to scroll threw the list while the text field is still active to highlight the wanted part number and perform the function. I do not know if anyone else attempted such a project and I guess I just wanted to start here by asking about it first before I attempted to do it myself.