The short answer
In a homa or fire-centered samskara, Agni is not decorative. The sacred fire is established, worshipped and used within a precise ritual structure.
A Vedic symbol of offering
The act of placing an offering into fire expresses transformation: something tangible is offered with mantra and intention. In Vedic language, Agni is closely connected with yajna and the carrying of offerings.
Why safety and tradition both matter
A sacred fire must be treated as both ritual and real fire. Homes and venues need heat-safe surfaces, ventilation, permission where required and careful supervision. Tradition never removes the obligation to protect people and property.
What families do
Families are usually guided when to sit, stand, repeat a name or mantra, or make an offering. The priest conducts the technical ritual sequence while helping participants understand the meaning appropriate to them.
Why not publish a do-it-yourself homa recipe
The mantras, offerings, sequence and fire procedures vary by rite and Vedic tradition. A family-facing website can explain purpose and preparation without pretending that priestly training can be reduced to a checklist.
This page explains family-facing principles. Exact practice can differ by sampradaya, Vedic tradition, region and family custom. Shri Venugopal Shastry can clarify what applies to your ceremony.