In our system setup it would be FI who is responsible to change company code addresses.
If your current company code address is printed somewhere on the form, and your programmer took this address from the right source, then it will automatically change in the form if you change the address in the customizing of company code, and there would not be any need to talk to an ABAPer as an address change is not a layout change at all.
In any case you should build your knowledge on your own system and it's design in-house by asking your colleagues and supervisors. Here we can only educate you about standards.