[billyu2]

Originally Posted by BillyMac

My IAABO state board (as well as IAABO International) does a poor job at noting changes in the IAABO Mechanics Manual.

I didn't know about this recent change (below) until it came up in a recent "Make The Call" video.

It is important to note, prior to granting a time-out request, the official must see or hear the head coach’s request in order to grant it (IAABO manual p. 65 Section B).

This is a recent manual change. (Up until a couple of years ago, this phrase stated that an official must see and hear the head coach's request).

In many instances, it is difficult for an official to both see and hear the request. We do not want to encourage officials to look away from the action on the court in order to grant a request, so this change was made. When requests are made outside the normal cone of vision of the official, the official may grant the time-out if they are certain the request is being made by the head coach of the team in control of the ball without seeing the request.

Has this also been changed (and to or) for NFHS mechanics (if it ever was and)?

That part of the statement is not correct because there are times when there is team control and the officials should not grant a request by their head coach.