Gmod f4 menu installation process?

Hello there I am working on a darkrp server and I entered a problem. I installed a menuin this sectionC:\ShadowRP\garrysmod\addons\darkrpmodification-master\lua\darkrp_modules

I then proceeded to disable the default menu. When I enter my server and press f4 the new menu does not show up. If you guys have a fix please reply. If you can please retell me the steps to installing the f4 menu.