In the 40+ years of calling balls & strikes, I have umpired baseball and softball. I have enough uniforms from different Alphabets to fill a closet.
Most of my games I've been by myself as most of my games were ASA softball, either SP or FP.
The year NCAA went with their own ruleset, I attended their clinic and was informed on how to i was to call balls and strikes. I was told how I was to address the coaches and players and what my mechanics would be and if I expected to advance past regular season play, I would conform to their expectations. After the clinic, I called the assignor and told them I would not be doing college softball except as fill-in from then on and I have since quit doing college softball.