Picture is worth a thousand words.
My tanks oldests corals are purple frogspawns. All started many years ago from a single head.
Corals have come and gone (died), but mighty Frogspawns have lived through ever possible event and disaster.
Over time as they grew, branches were broken off to start new clusters.
Some are "expoxy stem glued" (like the center one, where you can see the fresh whitish epoxy at bottom). Same for the one in the cave.
Some just lying on rock, or the stem stuck in a perfect fit hole (as the one on the far left).
This next photo shows re-arrangment, to make room for my newest Frogspawn Frag on the left which is a "Gold tipped Frogspawn".
Never saw one before, so bought it right away. Less then 2 weeks old. Hoping it grows and branches out, like the purple ones did.