Chaitanya-charitamrita, Antya 7.12: "…in the Dvapara-yuga one could satisfy Krishna or Vishnu only by worshiping opulently according to the Pancharatrika system, but in the age of Kali one can satisfy and worship the Supreme Personality of Godhead Hari simply by chanting His holy name." Srila Bhaktisiddhanta Sarasvati Thakura explains that unless one is directly empowered by the causeless mercy of Krishna, one cannot become the spiritual master of the entire world (jagad-guru). One cannot become an acharya simply by mental speculation. The true acharya presents Krishna to everyone by preaching the holy name of the Lord throughout the world. Thus the conditioned souls, purified by chanting the holy name, are liberated from the blazing fire of material existence. In this way, spiritual benefit grows increasingly full, like the waxing moon in the sky.
The true acharya, the spiritual master of the entire world, must be considered an incarnation of Krishna’s mercy. Indeed, he is personally embracing Krishna. He is therefore the spiritual master of all the varnas (brahmana, kshatriya, vaishya and shudra) and all the ashramas (brahmacharya, grihastha, vanaprastha and sannyasa). Since he is understood to be the most advanced devotee, he is called paramahamsa-thakura. Thakura is a title of honor offered to the paramahamsa. Therefore one who acts as an acharya, directly presenting Lord Krishna by spreading His name and fame, is also to be called paramahamsa-thakura." Ritvik is a REPRESENTATIVE of the acharya, SO IF the word REPRESENTATIVE is mentioned in CC 24.330 without mention of the word "Ritvik", what's the problem in understanding? Study Srimad Bhagavatam – there are many places which priest has to officiate, Ritvik is mentioned. Vedic society in the past has Ritviks – so why not now? Radha is not mentioned directly, but from word derivation.
In this case REPRESENTATIVE was used instead if the word Ritvik. "Representative of the acharya" is also mentioned similarly in (CC Madhya 24.330) — this is the secret. Ritvik is the same. Representative of acharya means RITVIK Representative who OFFICIATES on BEHALF of the acharya for the specific purpose. What's the purpose? For the purpose of performing
initiations, both first initiation and second initiation. The newly initiated devotees are disciples of His Divine Grace A.C. Bhaktivedanta Swami Prabhupada, the above eleven senior devotees acting as His representative.
Chaitanya-charitamrita, Madhya 8.100: "The name Radha is derived from this verse (Bhag. 10.30.28), from the words anayaradhitah, meaning "by Her the Lord is worshiped." Sometimes the critics of Srimad- Bhagavatam find it difficult to find Radharani's holy name, but the secret is disclosed here in the word aradhitah, from which the name Radha has come. Of course, the name of Radharani is directly mentioned in other Puranas. This gopi's worship of Krishna is topmost, and therefore Her name is Radha, or the topmost worshiper." Srila Prabhupada's 07-09-77, Letter to All G.B.C., All Temple Presidents: "Please accept my humble obeisances at your feet. Recently when all of the GBC members were with His Divine Grace in Vrindavana, Srila Prabhupada indicated that soon He would appoint some of His senior disciples to act as "ritvik — representative of the acharya, for the purpose of performing initiations, both first initiation and second initiation. His Divine Grace has so far given a list of eleven disciples who will act in that capacity: His Holiness Kirtanananda Swami His Holiness Satsvarupa dasa Gosvami His Holiness Jayapataka Swami His Holiness Tamala Krishna Gosvami His Holiness Hridayananda Gosvami His Holiness Bhavananda Gosvami His Holiness Hamsaduta Swami His Holiness Rameshvara Swami His Holiness Harikesa Swami His Grace Bhagavan dasa Adhikari His Grace Jayatirtha dasa Adhikari In the past Temple Presidents have written to Srila Prabhupada recommending a particular devotee's initiation. Now that Srila Prabhupada has named these representatives, Temple Presidents may henceforward send recommendation for first and second initiation to whichever of these eleven representatives are nearest their temple. After considering the recommendation, these representatives may accept the devotee as an initiated disciple of Srila Prabhupada by giving a spiritual name, or in the case of second initiation, by chanting on the Gayatri thread, justas Srila Prabhupada has done. The newly initiated devotees are disciples of his divine grace A.C. Bhaktivedanta Swami Prabhupada, the above eleven senior devotees acting as His representative. After the Temple President receives a letter from these representatives giving the spiritual name or the thread, he can perform the fire yajna in the temple as was being done before. The name of a newly initiated disciple should be sent by the representative who has accepted him or her to Srila Prabhupada, to be included in His Divine
Grace's "Initiated Disciples" book.
(Srila Prabhupada’s signature appears in the original) This July 9th 1977 letter was never revoked by Srila Prabhupada. This being the case, all the newly initiated devotees are disciples of his Divine Grace A.C. Bhaktivedanta Swami Prabhupada for as long as ISKCON exists.