Well it is simple dude .It is exactly how u typed it :
"/w idp-spambot .gadd gn = ALL JOIN AP123 gerhost"
"/w idp-spambot .gdel gn = ALL JOIN AP123 gerhost"
u give the command just one time to the bot and the bot start whisping to everyone who join in channel allstars about the game :
"ALL JOIN AP123 gerhost"
ihope u got it , just try it