This script does one simple thing: It will add a marker at the NOOSE HQ in Sustancia Road to access the IAA Procceessing Zone. Inside the Processing Zone building, there is another elevator to get down to the Server Banks.
Script is fully functional. The next step will be to add peds into the building so that it doesn't look dead :P
Put the .dll file and the .ini file from the releases page in your GTA V scripts folder. Usually something like D:\Games\Steam\steamapps\common\Grand Theft Auto V\Scripts
Start the game.