In chapter 1 of Lord of the Flies, how is Piggy indirectly responsible for the blowing of the conch?

Piggy has prior experience with conchs as his Aunt had one and she taught him how to blow it.  Piggy, in turn, teaches Ralph how to blow the conch, and from that moment on it is used to keep the peace and order among the boys on the island until Jack declares it is no longer needed.