As the Magic Council President, Elas didn't handle the day-to-day operations of the Magic Council and mostly left it to the Magic Council Elders.
But in serious times like this one, where the elf race had to communicate with the strongest from another world, Elas completely took matters into his own hands and decided everything.
The Elven Magic Council Elders didn't refuse, since even if their Magic Path was impure, they weren't blind and could still discern Zayne's power and status as a World Class Mage.
To be honest, even Zayne hadn't expected them to be this cooperative. From his estimations, there should have at least been one or a few elders who'd foolishly act to contradict Elas's every decision.
But from the looks of it, this elf race's higher-ups were relatively united in important matters such as this one.
