The feature you are looking for likely refers to the mod (often also searched as "No Random NPCs" or "No Random Towns"). This mod is designed to stop the game from automatically generating random, often stylistically inconsistent non-player characters (NPCs) to fill the world, ensuring that only characters you have personally created or chosen appear. Core Features
This mod is widely popular for rather than GTA V, though similar "No Boundary" or "Reduced Density" mods exist for other open-world games. The feature you are looking for likely refers
: Allows your own custom-made characters to take over service roles, such as vendors, doctors, or mail carriers, if they have the necessary skills. such as vendors