I used these ones this year

queen cage witrh fondant.jpg queen in cage with attendant.jpg

There is a short entrance and a long one. The queen can only get out the longer route as the short one has too narrow an entrance. The workers get in with her for a while before she gets out into the full colony.

I put the cage in for 48 hours before opening the plastic tab and it can take another 2 or 3 days before they have her out.

No matter what you do you will lose some queens on introduction which is why it's good to have spare ones.