The Archetypal Function is the mode through which a member of a Relationship Matrix relates to another. These modes are described as expressions of Archetypes. The choice of an Archetypal Palette is critical in determining the Archetypal Functions which can be analyzed.
Within the Dragon/Knight/Damsel Archetypal Palette, a man stranded on the side of the road being rescued by a woman may play the role of Damsel to her and she the role of Knight to him and a flat tire as the dragon.
A different relationship may see the same situation but the man playing the role of dragon and the woman as knight, with a car with valuable cargo as the damsel.