It's diffrent ways of running the bot. If you want to kill mobs and level, pick level bot, if you want to farm bg's, pick one of the bg's. and maybe wanna kill mobs AND farm honor? well, do both
Level Bot - Runs around killing mobs (download profile from the profile section for your level)
AB Mode - Queues for AB and simply runs around trying to act like an normal player (killing opposite faction)
AV Mode - Queues for AV and simply runs around trying to act like an normal player (killing opposite faction)
WSG - Queues for WSG and simply runs around trying to act like an normal player (killing opposite faction)
EOTS - Queues for EOTS and simply runs around trying to act like an normal player (killing opposite faction)
Mixed-AV - Mixture of Level Bot and AV Mode (load Level Bot profile and it will queue for AV and kill mobs during the que time)
Mixed-AB - Mixture of Level Bot and AB Mode (load Level Bot profile and it will queue for AB and kill mobs during the que time)
Mixed-WSG - Mixture of Level Bot and WSG Mode (load Level Bot profile and it will queue for WSG and kill mobs during the que time)
RaF - Havent tried this one myself, but I would expect that you have to run multiple bots, configue one bot to be the "leader" and the other bots to assist the leader. Then the bots will act like an normal party (sort of) when the Leader attacks an mob the rest will do aswell, and maybe one will heal you etc.
EDIT: took a while to write, guess some ppl was faster than me =)
Hope it helped.