Srila Prabhupada's Ritvik System
is authorized

SB 4.8.54 P Dhruva Maharaja Leaves Home for the Forest
The method of worship--chanting the mantra and preparing the forms of the Lord--is not stereotyped, nor is it exactly the same everywhere. lt is specifically mentioned in this verse that one should take consideration of the time, place and available conveniences. Our Krsna consciousness movement is going on throughout the entire world, and we also install Deities in different centers. Sometimes our Indian friends, puffed up with concocted notions, criticize, "This has not been done. That has not been done." But they forget this instruction of Narada Muni to one of the greatest Vaisnavas, Dhruva Maharaja. One has to consider the particular time, country and conveniences. What is convenient in India may not be convenient in the Western countries. Those who are not actually in the line of acaryas, or who personally have no knowledge of how to act in the role of acarya, unnecessarily criticize the activities of the ISKCON movement in countries outside of India. The fact is that such critics cannot do anything personally to spread Krsna consciousness. If someone does go and preach, taking all risks and allowing all considerations for time and place, it might be that there are changes in the manner of worship, but that is not at all faulty according to sastra. Srimad Viraraghava Acarya, an acarya in the disciplic succession of the Ramanuja-sampradaya, has remarked in his commentary that candalas, or conditioned souls who are born in lower than sudra families, can also be initiated according to circumstances. The formalities may be slightly changed here and there to make them Vaisnavas.
Conversations
Interviewer: What is the procedure of the movement? Do you initiate yourself all the disciples or do your other disciples also do that?
Prabhupada: Well, initiation or no initiation, first thing is knowledge. (break) ...knowledge. Initiation is formality. Just like you go to a school for knowledge, and admission is formality. That is not very important thing.
Whereas Srila Prabhupada DELIVERS by giving DIKSA knowledge the formality is conducted by the Ritviks (representatives).
Madhya 22.65 The Process of Devotional Service
uttama-adhikari--the topmost devotee; sei--he; taraye samsara--can deliver the whole world.
Note: Karma is taken by UTTAMA -ADHAKARI. Only he can DELIVER by definition. uttama-adhikari Sei taraye samsara.
Srila Prabhupada Pranati proves he delivers:
namas te sarasvate deve gaura-vani-pracarine
nirvisesa-sunyavadi-pascatya-desa-tarine
Our respectful obeisances are unto you, O spiritual master, servant of Sarasvati Gosvami. You are kindly preaching the message of Lord Caitanyadeva and delivering the Western countries, which are filled with impersonalism and voidism.