I've no exp actually doing it, but i've seen people cut it, glue it, and trade it. You just find where two large clumps split off each other, pull them apart, and glue the torn junction to a rock. Done and done. It seems to be a bit fragile to actually ship well, IMHO. I think the easiest was to introduce it is to try to put it somewhere, watch it melt, and just wait for it to show up somewhere else in the tank (kinda like bubble algae).