Substitiution error

[RookieDude]

Thanks mick, for your reply.

I guess I'll answer my own question, about rule reference...Rule 10-2 states:
A substitute shall not enter the court:
ART 1...Without reporting to the scorer.
ART 2...Without being beckoned by an official, except between quarters.
PENALTY: (Arts. 1,2) Two free throws plus ball for division-line throw-in. One foul for either or both requirements. Penalized if discovered before the ball becomes live.

Funny, this was posted yesterday...and last night I had something similar happen.
Substitute A6 checked in and came running onto the court during a dead ball, without being beckoned. As I was gently explaining to A6 that he should wait for an official to "wave" him in Subs B6,B7,and B8 from the other team came running onto the court, after checking in at the scorer's table.
Coach from Team A saw Team B's subs come in without being beckoned...he got my attention and pointed toward Team B's bench, suggesting Team B be penalized. (Team A was the Team that got the T the night before for the Sub not checking in)
I simply explained to the Coach that his player had just done the same thing prior to the other subs and that we would just advise them on the proper procedure...he was, of course, good with that.
Anyway...probably much ado about nothing...but, obviously was something to certain officials on certain nights under certain circumstances that needed to be addressed.