Appealing

[Just Curious]

Fed Ball... Batter sets up to bunt... The pitch.... PU calls a ball...Defense wants to appeal... They thought she went for the ball.

Question #1 Is there a time when you don't want to go to your partner and insist on taking the call yourself?

I think I remember someone telling me that you should only go to your partner when he/she's in either the "A" or "B" position, but not in the "C".

Question #2 Is a check swing handled any differently???

Question #3 Any tips on making the right calls on either of these scenarios? What do you look for?

Thanks!