A week after installation the hive needs to be checked for queen acceptance. We are looking to see eggs in the newly drawn comb. If you don't see eggs after 7 days, check again after 10 full days from the time of putting the bees in.
Failure to check for queen acceptance may put your colony in peril. If for some reason your queen was killed or was injured when installing the bees, you may be queenless and the hive will not survive without a queen.