Elementary question from a non-ref

[grizwald]

How does an official decide whether the ball is to be inbounded on the sideline or on the baseline, on a violation or non shooting foul?

From my scanning quickly through the rulebook it seems the term "nearest point" comes up alot, what if they are equally near to both?

I kind of feel silly asking such a simple question, but you guys have always been so kind in the past.

Thanks in advance