To perform the Durga Lakshmi Saraswati Homam:

1. Choose an auspicious date and time for the Homam.
2. Set up a clean and sacred space for the ritual, preferably in a dedicated altar.
3. Gather the necessary items for the Homam, including idols or images of Goddess Durga, Lakshmi, and Saraswati, along with flowers, incense, ghee, fruits, and other offerings.
4. Begin by purifying the space and the items with water, chanting mantras, and invoking the presence of the goddesses.
5. Light the sacred fire (agni) in the homa kund or designated fire pit.
6. Perform prayers and invocations to each goddess, offering specific mantras and reciting their respective attributes and qualities.
7. Offer ghee, flowers, fruits, and other sacred substances into the fire, symbolizing the offering of devotion and seeking blessings from the goddesses.
8. Chant Durga, Lakshmi, and Saraswati mantras throughout the Homam to invoke their divine energies.
9. Perform circumambulations around the fire, symbolizing reverence and surrender to the goddesses.
10. Offer prayers and seek the blessings of the goddesses for strength, abundance, prosperity, knowledge, and overall well-being.
11. Conclude the Homam with a final prayer, expressing gratitude to the goddesses for their presence and blessings.
12. Distribute the Prasad (blessed offering) to the participants, symbolizing the sharing of divine blessings.

Note: It is recommended to consult with a knowledgeable priest or expert in Vedic rituals to perform the Durga Lakshmi Saraswati Homam correctly, as the procedures and mantras may vary based on regional customs and traditions.