Free throw Violation

[Zoochy]

Here is my understanding.
Before A1 releases the ball, B1 steps into the lane (disconcerts A1). If any Team A member in a lane marked space violates, then only penalize the 1st violation. If A1 happens to shoot an air ball, then again only penalize the 1st violation. State that B1's action caused A1 to be distracted, thus the airball.
Similar situation. A1 releases the ball, B1 steps into the lane (No disconcertion of A1). If any Team A member in a lane marked space violates, then only penalize the 1st violation. If A1 happens to shoot an air ball, then penalize both violations. The ball would go to the team with the next AP throw in.
Another situation. B1 violates by steping into the lane. Any Team A member NOT in a marked lane space violates, then penalize both vio;ations. The ball would go to the team with the next AP throw in.