Rule question
 

What does NFHS rule 3-3-1e mean?

Basically, when one team has multiple subs, the other team can say:

Wait a minute, until everybody knows who his man is.

Who is guarding whom?
 

3-3-1e. A captain may request a defensive match-up if three or more substitutes from the same team enter during an opportunity to substitute.

If one team brings in 3 or more subs at one time, the other team can request a moment to figure out who is guarding whom. It's meant to be a quick situation. Don't allow the coaches to turn it into a free time out. Also, nobody has to go and line up at the division line.

Line Up ...
 

Back in the olden days, players would "line up" around the jump ball circles (there were three jump ball circles back then), not by rule, but by "custom".

I have yet to have a captain request this.

That is largely because about 99.95% of captains (and, likely, 90% of their coaches) have no idea the rule is there....

even if they knew the rule, i doubt it would be requested much.....how hard can it be to figure out who you are guarding?

What if.....

there isn't a defensive team captain on the floor to request the "match game" moment?

Why deny it. Don't look for trouble.

then you give whoever asked for one a technical foul for unauthorized speaking to an official:p

Official beckons subs in.
Subs enter the game, replaced players leave.
Official pauses 2-3 seconds while players do the "I've got 52, you take 23" thing.
Game resumes.

I'm with you, however, the rule specifically indicates a captain is to request, though.

If you request it, you're a captain.

I know this is a rule, but how often is this enforced? I have players ask me what the foul call was (politely) or how many shots we have and I don't think twice. Assuming no unsportsmanlike conduct or disrespect towards an official, has anyone ever T'd a non-captain player for speaking to the you?

Why would you? How would you? Based on what rule?