In principle, this is the usual cheat menu, which is already the sea.
Grand Theft Auto 5 (GTA V): Cheat (New The Umbrella + 90mil Menu) [1.38] Free Download
It’s just that another author made this cheat and shoved our favorite money cheat + 90mil into it.
Therefore, I see no reason to describe all the functions..
The cheat was made right before the update of the game, but it still works.
Try it, experiment, cheat is safe and not detected by anti-cheats.
-Drop the files from the archive into the game folder.
-Open the menu by pressing F11.
-Arrow navigation in menus.