Yes, you are allowed to fight. However, you just can't start out a RP with a fight; of course, there has to be provocation. The fight club is currently disbanded (and it was against the rules, anyway) so do know that fighting does indeed bring harsh consequences.
If you wish to fight with another member, then do the above steps, then you guys take turn dishing out your fighting move, as you do in any RP that involves fighting. Please do know that godmoding (making damage without the other person's consent) and powerplaying (controlling the other player's movements through your post) is prohibited, so you may want to question them in OOC before you do a real move. For instance, if sudden violence is what starts a fight, ask your 'opponent' beforehand if you may indeed land a blow to start the fight.
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