I have never got a package, but have installed swarms. In a new TBH had several bars out, dumped them in, put the bars back, and installed the follower board at about bar 9. That gave them 8 bars between the follower and the entrance. I have requeened a couple of times, would lay the queen cage at the entrance for a little, then open hive move a few bars and hold cage down in the hive, place her in the bottom of hive, if the didn't try to ball her I would open the cage, with it in the bottom of the hive. Has worked for me. Good luck
Joe