A variation on the "standard" method
This page should be read in conjunction with the "Artificial Swarm" page that can be accessed by the button top left.
It is often assumed there is only one version of the artificial swarm, but there are several, all based on the same principle, but with slight variations. All that happens in an artificial swarm is the parent colony is moved, allowing flying bees to be diverted from the parent colony to another colony placed on the original site. Most, or all of the brood stays with the parent colony.
In the "standard" artificial swarm the queen is removed from the parent colony and placed in the new colony. The method described here leaves the queen in the parent colony, so it is a useful alternative if you are unable to find the queen.
As with all things in beekeeping, I advise understanding what is happening in the operation before attempting it. To just do something "by numbers", without understanding what you are trying to achieve will probably end in failure.
On finding swarm Q/Cs in a colony......
If you remove the bees from the frame that is put in the new colony, then you are relying on the flying bees and those in the supers to be sufficient to cover the frame of brood and make a reasonable sized colony. It would be better if it is done on a good flying day before the evening. If you don't remove the bees from the frame, this is not a problem.
If there is a heavy nectar flow, the new colony may store nectar very quickly, because it has no brood to feed until 4 days after the queen comes into lay, perhaps 10-15 days after creating the artificial swarm.
This method is a huge time saver. I have never used it myself for swarm control, but I have helped other beekeepers on many occasions. I have used it for making increase, when I have found it to be a very useful alternative to the "standard" method.