[EDIT I was wrong about what you had to type]. If you installed LSPDFR correctly by copying all of the .zip contents at once, and then the latest version of RPH,, the console should give you an autofill suggestion.
An easier way would be to Open RPH settings and tell it to load 'LSPD First Response' automatically. If LSPDFR is installed correctly, RPH should list it as one of the plugins.