USSSA pitching rules and defensive conferences

[Ran.D]

I coach softball, but just started a 9u baseball tournament team. Had a couple of things come up over the weekend playing USSSA.

Pitching - Can a pitcher leave the mound, play another position, then return to the mound in the same game. Read the MLB rules (which govern USSSA), but did not see a reference to this situation.

Umpire explained correctly that since I had made 2 mound trips, the pitcher had to be automatically removed. What if I had not made the second trip and sent the pitcher back out at the start of a later inning?

Also, is there a rule limiting defensive conferences with players other than the pitcher?