Anyone know how to get entitys into your f4 menu?

So, im new to creating a server, at this point in making it, i have the server, all its addons, the game mode and map and a custom hud. I still have the default f4 menu. I downloaded a printer addon from steam workshop and they worked great, they are fully cutomizable and easy to use but i have one problem. They appear in the entity's spawn menu and not in the f4 menu. Anyone know how to fix this? Thanks!