Getting started
Install
The overlay attaches to a running GTA5.exe. If the world is still streaming, there is nothing solid to hold. Wait until a protagonist actually moves.

Extract
Put the files in a user folder. Not Program Files. Not the ZIP window.
Launch GTA V
Start the Rockstar, Steam, or Epic copy you own. Load Story Mode.
Wait
Camera settles and the character walks. Then elevate Modest Menu.
Attach once
Run as administrator, accept UAC, attach once. Repeating attach does not help.
FAQ
Why administrator?
Without elevation Windows will not let the overlay see GTA5.exe.
Story Mode only?
Yes. This documentation does not cover public GTA Online sessions.