Question was, do I leave the entrance reducer on as soon as I hive the new bees, and for how long.
Looks like that has been answered many times, and I was able to gain info that yes it is advisable to leave in place until I notice bees crowding entrance. Just had to do search.
One other thing is the amount of bees left in the package. Tapping and shaking didn't remove all the bees, and I placed the remainder close to the entrance hoping they would find their way in. I will check this out this evening when I return from work. Hope this was the correct thing to do?