Go to your plug-ins folder for UE(usually epic games->unreal engine->plugins->marketplace->Fgear or something like that), copy the fgear plugin and make a plug-in folder with the same directory in the sample project.
Go to your plug-ins folder for UE(usually epic games->unreal engine->plugins->marketplace->Fgear or something like that), copy the fgear plugin and make a plug-in folder with the same directory in the sample project.