By my reading, this is harder than it looks.
The Volkyv needs +6 of applicable sympathies to use both R: Symbol and T: Symbol. Sympathetic Influence uses Pre + Leadership + Simple die and a confidence point of every use, so even getting 15's for +2 is dodgy (multiple tries will get it), and 24's are basically impossible (need Pre+Ld of 14 and roll of 10, or lots more confidence). Managing to string together 3 different sympathies that align to hit the whole Order of Hermes is a stretch, and SIX is pretty much impossible (and the Personal Influence would fade before he got all six +1's).
Next, there's all that Grant(ing) with Evocation. That's a Warping Point or Confidence Point every time it's used, AND he needs Sympathy with the villagers to create the effect and is limited to (Sympathy x5) for doing so. The first person he has to grant Ceremony (Base15, +1M Touch, then Duration Sun+2M minimum to be useful = 30), so he needs +6 applicable Sympathy with that villager just to do that for Sun Duration, then he has to go on an Grant enough Sympathy Traits to that person as well so that they eventually can join in on the grand ritual (requires 6 points of Sympathy from everybody if my reading is correct, as everyone in the Ceremony counts as the caster for effect considerations - which is what allows the effect total to be boosted so high due to Sympathy stacking). Without adding in Evocation, that person will contribute, on average, +1 to any Ceremony use (Ceremony score 1+1 for Specialization, -1 per participant, add Communication, averaging 0 - and Sympathy Bonuses don't apply to Supernatural Abilities).
Then you start having to do this string of events to multiple people, each time it costs everyone a confidence point (they're run out fast) or accept a Warping Point (they'll warp fast).
So for all that work (Warping and Confidence), on a per person basis you get 1+Communication. Out of 40-50 villagers, how many have +0 or higher Communication? If we assume 1/2, that's +25 to the rite, up to maybe +40 for those folks with +1 Communication or better. You're not busting the Order with that.
Unless I'm reading this wrong. A large group of Volkyv together could do this, I think, but a lone guy using Grant faces some serious hurdles; giving people Ceremony by itself isn't enough.
Edit: Even managing the 30 to Grant the Ceremony for Sun is likely beyond the lone Volkyv's power, given how Methods and Powers advance as Abilities (starting at age 35 means 5 max in each, so stress + 5+ 5 + Communication + Aura makes a 30 troublesome, 35 for Moon duration very troublesome. Granting that same person Puissant Ceremony is equally difficult. Then you're getting Communication +3 per person, and you'd need about 10 of those people to approach using Grant to give Evocation (65 for Moon Duration) to one person. I don't want to think how many Confidence and/or Warping Points would be incurred getting there, even accounting for bootstrapping.