I’m sure you’ve figured this out already, terribly sorry for the delay. For anyone else wondering if the recipe calls for a 0 min addition – that is right when you turn off the heat at the end of the boil. When the timer goes, “beep beep beep beep!”.
60 min additions are your bittering hops
45 min are more bittering
30 min is about half and half
15 min we are getting some bitterness, but mostly aroma.
10 min – 2 min: Aroma standard (if you could say there was an actual standard for anything in brewing, cleanliness aside)
1 min – 0 min: All aroma baby!