Users typically target a specific process (e.g., Engine.exe for Combat Arms) and select the DLL they wish to inject via an "Add DLL" button or drag-and-drop.
Because of its nature, many antivirus programs flag the file as malicious or a "potentially unwanted program" (PUP).
Caution is advised when downloading from unofficial mirrors, as these versions may contain actual malware bundled with the injector.
How To Install and Use Extreme Injector | Basic Tutorial | v3.7.3