[BEES4U]

Slip a queen excluder between the two brood chambers, wait 4 days because eggs hatch in 3, look for eggs and natural queen cells as they tell you where the queen is located, insert your new queen into the queenlees hive body after you have destrored natural cells, wait 10 days to check for the new queens acceptance and good luck!
The bees will take a new queen if they are queenless overnight.
Ernie

 

[BEES4U]

I don't know about you, but I hate seeing $20 get stung to death.

you can leave the excluder on for a few more days.

You can release the attendant bees prior to intruduction.
I can get a 90% plus queen acceptance using the excluder.
others will probably chime in as we wentt over this topic last spring. But, it's refreashing to get it in motion again.
How about insert the queen cage instead of insert, I did not say to directly release the queen.
Ernie

 

[BEES4U]

Next day replace excluder with inner cover...escape hole taped closed, rim up entrance notch to rear of hive. Give caged queen.

Old bees fly below, young bees accept queen easily. Leave queen for 3 weeks to establish broodnest and increase the total number of frames of brood in the colony...2 queens laying. Go below and kill old queen(s) and unite.

Some of us use split boards too.
:scratch:
the original question adressed re-queening and making a divide.
Another method is caled re-queening without de-queening.
Ernie