A:
it depends on the type, with the jigheads with the wire worm keeper in the jighead, you simply thread the worm head onto that and then embed the hook into the worm (keeping the worm straight, of course). The jigheads with the big barb i think you thread about 1/2" - 1" of the worm onto the jighead, put the worm past the barb, then embed the hook in the worm in the same matter as the wire worm keeper jighead.