that's awesome! How does one catch a swarm? Do you just put the hive in front of them and hope? Grab the queen and place her inside? Sacrifice a goat?
As you first describe, I put a hive (with frames in it) in front of it and grab a handful of bees and lay onto the entrance. I have prepared the inside with small honey bait. They actually just walking straight into it most of the times, you got to remember that they are looking for a new home. So when I place a complete new home in front of them, well, it’s like been given a new house! However, its kind of a hurry to do this, especially if it’s early on the day. The swarm almost always land on a first spot near the original hive, and whilst they sit there they have scout bees looking for a better place all around. And as soon someone “calls in” a better spot the whole swarm just moving. But if the day has passed they most likely sit where they are until next day. Bees that swarm isn’t defending a home since they haven’t found it yet, so they actually is very kind and easy to handle. They have been eating a lot of honey before they leave, and that means that they won’t sting you unless there is a direct threat against the super organism (the whole swarm, like punching straight into it or similar).
Occasionally I sacrifice a couple of albino goats and dance in circles simultaneously as a scream out loud in agony until they return. Very rare, though.