Assuming your nuc box is 5 or 6 frames and you have those frames. Assuming also that you are right and your experience tells you bearding means swarming, because it may not mean that.
Open hive and get into brood box. If you do fine queen cells then create an artificial swarm right there and then, no delay. So be ready with your kit and new location.
Into your nuc box put 2 or 3 frames of brood in its various stages but definitely including very young brood. Put in 2 or 3 frames with stores of honey and pollen. Of course you should find brood and stores on same frame. Put in the final empty frame. Shake in just some bees. Don’t worry more coming to the nuc very soon. Set the nuc box entry to fully open. Add some feed into the feeder if your nuc has one. Put lid on it and put it right next to your current hive. Entry same way and same height.
Any other queen cells destroy. If you are sure it has not swarmed then don’t bother looking for queen. You have a long list of things to do so no time to lose.
Now put remaining frames in existing hive. Put lid on top of brood keep the flow super off for the moment. Now seal the entrance so that no bees can escape.
Now move this hive to new location. Keep it sealed.
Any flying bees will go to the nuc now sitting in exactly same location as your old hive was. So you will not lose any.
Back to old hive now in new location. Assuming it’s not too hot and the bees can remain closed up till next morning. Great. Put in front of hive branches of greenery. WHY?
When you open the hive entry up. Bees will emerge. They will immediately notice the branches and because that is not what they know they will reorientate themselves. They will not return to the old location.
Back to your nuc. In 2 or 3 days time close your entry up to stop bees escaping. After dark is a good time for me. Now move it to your new location. Put branches in front of it as above. Open it next day.
Moved your bee hives
Created 2 hives.
Stopped a swarm
Re queened one brood
Have something extra to celebrate
Back to the flow hive super which if you remember I left at the old location next to the nuc box. Once you have put the old box in its new location you could put the super back on top straight away but I would seek to just leave it next to the new hive location for a while. Put it back on in a few days.
I don’t know what you will do with the super for those days. But by moving it to the new location the bees will evacuate it flying back to the nuc. Then you can store it away from harm for the next few days.
Now you just need to get another brood box to transfer your nuc into should you wish to keep a full 2nd hive. But you could after the new queen has got going in one months time take frames of brood and add to your other hive. Placing undrawn frames in the nuc and therefore keeping your nuc as it. You will have a spare queen and brood to use or give away.
Now stand by for some of the great flow forum members to add detail. Many are still asleep and for others it’s early too.
This is a wonderful topic you introduced, right at the very heart of bee keeping, and it happened to land at a time when for me it’s day time. Have fun.