Move the interaction through three phases, generally divided by exchanges of dialog but not necessarily only one round long.
- Determine initial attitude without the benefit or penalty of charisma. Apply ±4 for any non-verbal biases, such displaying the symbols of an enemy tribe or being a filthy barbarian among perfumed concubines.
- Roll again, applying relevant charisma bonuses. Ignore the biases from first impressions, but include any new information. Friendly gestures or bribes promote a friendly reaction. Rude or aggressive behavior promotes negative reactions. Consider the actions of participants.
- Make one, final roll. Conclude the encounter with role-playing or combat.