Don't be too lazy and try to read docs sometimes...
It's described here. Just look there for "addbot" command - it's described sufficient to get it correctly to work. Make sure - in podbot.cfg addbot is without pb prefix, during the game, when You want add any bot, You need to use pb prefix (like for all other commands). I mean so:
pb addbot 100 2 1 1 "Crazy KWo"