Leave the cage corked for 4 days, placed in the middle of the hive, 2 inch down from the top bar of the frame. On the 5th day go in. Pull the cork out and stuff the hole with marshmallow. Put the marshmallow in your mouth to get it wet and sticky. Make sure the marshmallow is smeared in as a tight spongy fit, it must be in there good and sticky. Use a big marshmallow so it takes up the whole hole. Minis are sometimes too small and do not fill the void, they fall out. Eat what is left of the marshmallow. Put the cage back in the same place, same frame. Close up the hive and walk away. Stay away, do not disturb. Go back 10 days after the marshmallow date and find a nice patch of developing brood - and start your beekeeping adventure.
Feed 1:1 syrup continuously from day 1. Also feed a pollen supplement (patty) on marshmallow day.
Hope that helps!