ASA Fast pitch mechanic - dropped 3rd strike

[Julio Caliente]

All of the nuances that softball has that I am trying to learn. There has got to be a different mechanic for dropped third strikes (be it verbal, signal, or both). What is the mechanic for PU for the following:

1) On a called 3rd strike that the catcher drops e.g. pops out of glove or catcher flat out misses it (I have seen this in younger FP SB)?

2) Swing strike 3?


Thanks in advance.....