1. Yajamana - Sponsor of the yajna
2. Brahma - Director or Supervisor, he should know all the four Vedas
3. Udgata - Samavedi, he sings the Vedic hymns
4. Hota - Rigvedi, He chants the mantras while oblations are offered
5. Adhvaryu - Yajurvedi, he offers the oblations to the holy fire and takes care of the rituals
6. Brahmanacchamsee & Aagneedhra - Assistants to Brahma
7. Prastota ,Pratiharta & Subrahmanya - Assistants to Udgata
8. Maitravaruna , Acchavaka & Gravastuta - Assistants to Hota
9. Pratiprasta, Neshta and Unneta - Assistants to Adhvaryu
10. Brahmacharis and snatakas