Just a reminder to the newbies to the craft that when bees get going they can move at a very rapid clip.
One of my colonies last week had four frames of brood. However there were a lot of bees so I gave them empty combs each side of the nest and one in the middle as they had enough bees to cope with that. Please note if you are at all unsure how to judge that kind of strength then you do not have the knowledge to judge the moment.
This week, 8 frames of brood.
Just be aware that you need to give the queens space to lay.