Timekeeper sneaking in subs

[Tio]

So in Jr. High game, you will have parents volunteering on the clock/board and wouldn't worry about it too much. If it is happening at a higher level game with staff working the clock, I would address with the timer. But by rule you would have to bring them in. In NCAA rules you would not bring in subs on an inadvertent whistle or timing mistake inside of 1 minute.