As early as 1940, graduate chapters of Zeta Phi Beta began to realize the importance of the prestige, good will and cooperation of women who, for various reasons, were not members of any Greek-letter organization. Under the administration of Soror Lullelia Harrison, the first Amicae chapter was organized in Omaha, Nebraska in 1947 making Zeta the first sorority in the National Pan-Hellenic Council to organize an auxiliary group. Zeta Amicae are affiliated through local chapters.
Archonettes are high school-aged young ladies who demonstrate an interest in the goals and the ideals of scholarship, sisterly love, and community service. Archonette groups are affiliated through local chapters.
Amicettes are girls 9 to 13 years of age who are willing to strive toward the high ideals of Zeta Phi Beta Sorority and who demonstrate potential for leadership in service to the community. Amicettes are affiliated through local chapters.
Pearlettes are girls under 9 years old who are mentored by ladies of Zeta Phi Beta Sorority, Inc. to become outstanding leaders in their community.